# CUSTOMARY UNITS OF TIME

Customary units of time is a system of measurements commonly used for time in the united states.

For measuring time , the U.S. customary system uses the second, minute, hour, day, week, month and year which are the only seven customary time measurements in everyday use.

The relationship among the measurements second, minute, hour, day, week, month and year are given below. ## Conversions ## Practice Problems

Problem 1 :

Convert 2 minutes into seconds.

Solution :

Here, we convert bigger unit into smaller unit. So we have to multiply.

2 minutes  =  2  60 seconds

2 minutes  =  120 seconds

So, 2 minutes is equal to 60 seconds.

Problem 2 :

Convert 3.5 hours into minutes  .

Solution :

Here, we convert bigger unit into smaller unit. So we have to multiply.

3.5 hours  =  3.5 x 60 minutes

3.5 hours  =  210 minutes

So, 3.5 hours is equal to 210 minutes.

Problem 3 :

Convert 3 days into minutes.

Solution :

Here, we convert bigger unit into smaller unit unit. So we have to multiply.

3 days  =  3 x 24 hours

3 days  =  72 hours

3 days  =  72 x 60 minutes

3 days  =  4320 minutes

So, 3 days is equal to 4320 minutes.

Problem 4 :

Convert 480 seconds into minutes.

Solution :

Here, we convert smaller unit into bigger unit. So we have to divide.

480 seconds  =  480 / 60 minutes

480 seconds  =  6 minutes

So, 480 seconds is equal to 6 minutes.

Problem 5 :

Convert 112 days into weeks.

Solution :

Here, we convert smaller unit into bigger unit. So we have to divide.

112 days  =  112 / 7 weeks

112 days  =  16 weeks

So, 112 days is equal to 16 weeks.

Problem 6 :

David prepares 24 pounds of metal in 1 hour 36 minutes. At the same rate, How many ounces of metal will he prepare in one minute ?

Solution :

1 hour 36 minutes  =  60 min + 36 min  =  96 minutes

1 pound  =  16 ounces

24 pounds  =  24  16 ounces  =  384 ounces

1 hour 36 min -----> 24 pounds

96 minutes -----> 384 pounds

So, no. of pounds prepared in 96 minutes is 384 ounces.

No. of ounces prepared in in one minute is

=  384/96

=  4

So, 4 ounces of metal is prepared in one minute.

Problem 7 :

Mark used 15840 ounces of metal to make an alloy in 45 minutes. Find the amount metal used in one minute (in ounces).

Solution :

No. of ounces used in 45 minutes  =  15840

No. of ounces used in 1 minute  =  15840/45

No. of ounces used in 1 minute  =  352

So, 352 ounces of metal used in 1 minute.

Problem 8 :

Mrs. Moore took 4 hours 30 minutes to complete a work. How many seconds will Mrs. Moore take to complete the same work ?

Solution :

4 hours 30 minutes  =  4 ⋅ 60 min + 30 min

4 hours 30 minutes  =  240 min + 30 min

4 hours 30 minutes  =  270 minutes

4 hours 30 minutes  =  270  60 seconds

4 hours 30 minutes  =  16200 seconds

So, Mrs. Moore will take 16200 seconds to complete the same work.

Problem 9 :

Tommy takes 10 minutes time for each pizza he makes. How many seconds will he take to make 4 pizzas ?

Solution :

1 pizza -----> 10 minutes

4 pizzas -----> 4  10 minutes

4 pizzas ------> 40 minutes

4 pizzas ------> 40  60 seconds

4 pizzas ------> 2400 seconds

So, Tommy will take 2400 seconds to make 4 pizzas.

Problem 10 :

A piece of work can be done by Mr. David in 9 days working 10 hours per day. How many hours will be taken by Mr. David to complete another work which is 4 times the first one ?

Solution :

Time needed to complete the given work is

=  9  10 hours

=  90 hours

Time needed to complete another work which is 4 times the first first work is

=  4  90 hours

=  360 hours

So, the required time is 360 hours.

Problem 11 :

Jose needs 6 hours to complete a work. But Jacob need 3/4 of time taken by Jose to complete the same work. In how many minutes will Jose complete the work ?

Solution :

Time required for Jose  =  6 hours

Time required for Jacob  =  3/4 of time taken Jose

Time required for Jacob  =  3/4 ⋅ 6 hours

Time required for Jacob  =  3/4  6  60 minutes

Time required for Jacob  =  270 minutes

So, Jacob needs 270 minutes to complete the work.

Problem 12 :

Robert has been given 2 hours to complete a work. If the time is reduced by 25%, in how many minutes will he complete the same work ?

Solution :

Time taken by Robert to complete the work  =  2 hours

If the time is reduced by 25%,

Time taken by Robert to complete the work is

=  75% of 2 hours

=  0.75  2 hours

=  0.75 ⋅ 2 ⋅ 60 minutes

=  90 minutes

So, Robert will take 90 minutes to complete the work. Apart from the stuff given in this section, if you need any other stuff in math, please use our google custom search here.

If you have any feedback about our math content, please mail us :

v4formath@gmail.com

We always appreciate your feedback.

You can also visit the following web pages on different stuff in math.

WORD PROBLEMS

Word problems on simple equations

Word problems on linear equations

Word problems on quadratic equations

Algebra word problems

Word problems on trains

Area and perimeter word problems

Word problems on direct variation and inverse variation

Word problems on unit price

Word problems on unit rate

Word problems on comparing rates

Converting customary units word problems

Converting metric units word problems

Word problems on simple interest

Word problems on compound interest

Word problems on types of angles

Complementary and supplementary angles word problems

Double facts word problems

Trigonometry word problems

Percentage word problems

Profit and loss word problems

Markup and markdown word problems

Decimal word problems

Word problems on fractions

Word problems on mixed fractrions

One step equation word problems

Linear inequalities word problems

Ratio and proportion word problems

Time and work word problems

Word problems on sets and venn diagrams

Word problems on ages

Pythagorean theorem word problems

Percent of a number word problems

Word problems on constant speed

Word problems on average speed

Word problems on sum of the angles of a triangle is 180 degree

OTHER TOPICS

Profit and loss shortcuts

Percentage shortcuts

Times table shortcuts

Time, speed and distance shortcuts

Ratio and proportion shortcuts

Domain and range of rational functions

Domain and range of rational functions with holes

Graphing rational functions

Graphing rational functions with holes

Converting repeating decimals in to fractions

Decimal representation of rational numbers

Finding square root using long division

L.C.M method to solve time and work problems

Translating the word problems in to algebraic expressions

Remainder when 2 power 256 is divided by 17

Remainder when 17 power 23 is divided by 16

Sum of all three digit numbers divisible by 6

Sum of all three digit numbers divisible by 7

Sum of all three digit numbers divisible by 8

Sum of all three digit numbers formed using 1, 3, 4

Sum of all three four digit numbers formed with non zero digits

Sum of all three four digit numbers formed using 0, 1, 2, 3

Sum of all three four digit numbers formed using 1, 2, 5, 6

Featured Categories

Math Word Problems

SAT Math Worksheet

P-SAT Preparation

Math Calculators

Quantitative Aptitude

Transformations

Algebraic Identities

Trig. Identities

SOHCAHTOA

Multiplication Tricks

PEMDAS Rule

Types of Angles

Aptitude Test 