# PERCENTS OF NUMBERS AND MONEY AMOUNTS WORKSHEETS

## About "Percents of numbers and money amounts worksheets"

Percents of numbers and money amounts worksheets :

Here we are going to some practice questions on percents.

(1)  Find the 20% of \$50

(2)  Find the 50% of \$80

(3)  Find the 23% of \$80

(4)  The percent of 20 minutes to 1 hour is

(5)  In a class of 35 students, 7 students were absent on a particular day. What percentage of the students were absent?

(6)  Ram bought 36 mangoes. 5 mangoes were rotten. What is the percentage of the mangoes that were rotten?

(7)  In a class of 70, 60% are boys. Find the number of boys and girls.

(8)  In 2010, the population of a town is 1,50,000. If it is increased by 10% in the next year, find the population in 2011.

(9)  10% of \$300 is

(10)  5% of \$150 is

## Percents of numbers and money amounts worksheets - Solution

Question 1 :

Find the 20% of \$50

Solution :

=  2

Hence 20% of 50 is 2.

Question  2 :

Find the 50% of \$80

Solution :

50% of \$80  =  (50/100)  x 80

=  (1/2) x 80

=  40

Hence 50% of \$80 is 40.

Question 3 :

Find the 23% of \$80

Solution :

50% of \$80  =  (50/100)  x 80

=  (1/2) x 80

=  40

Hence 50% of \$80 is 40.

Question 4 :

The percent of 20 minutes to 1 hour is

Solution :

Let "x" be the unknown percentage

1 hour  =  60 minutes

x% of 60 minutes  =  20

(x/100) x 60  =  20

(x/10) x 6  =  20

6x/10  =  20

Multiply by 10 on both sides

6x  =  20 (10)

6x  =  200

Divide by 6 on both sides

x  =  200/6

x  =  100/3  ==>  33  1/3 %

Hence 33  1/3 % of 1 hour is 20 minutes

Question 5 :

In a class of 35 students, 7 students were absent on a particular day. What percentage of the students were absent?

Solution :

Total number of students  =  35

Number of students absent  =  7

percentage of students absent

= (Number of students absent/total number of students) x 100

=  (7/35) x 100

=  (1/5) x 100

=  20%

Hence 20% of students were absent.

Question 6 :

Ram bought 36 mangoes. 5 mangoes were rotten. What is the percentage of the mangoes that were rotten?

Solution :

Total number of mangoes  =  36

Number of rotten mangoes  =  5

percentage of rotten mangoes  =  (5/36) x 100

=  13.89%

Hence 13.89% of mangoes were rotten out of 36 mangoes.

Question 7 :

In a class of 70, 60% are boys. Find the number of boys and girls.

Solution :

percentage of boys  =  60%

percentage of girls  =  40%

Total number of students  =  70

Number of boys  =  60% of 70

=  (60/100) x 70

=  42

Number of girls  =  40% of 70

=  (40/100) x 70

=  28

Question 8 :

In 2010, the population of a town is 1,50,000. If it is increased by 10% in the next year, find the population in 2011.

Solution :

Population in 2010 = 150000

Increase in population  =  (10/100) x 150000

= 15000

Population in 2011 = 150000 + 15000

= 165000

Question 9 :

10% of \$300 is

Solution :

=  10% of \$300

=  (10/100) x 300

=  (1/10) x 300

=  30

Hence 10% of \$300 is \$30

Question 10 :

5% of \$150 is

Solution :

=  5% of \$150

=  (5/100) x 150

=  (1/20) x 150

=  15/2  ==>  \$7.5

Hence 5% of \$150 is \$7.5

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