## Variation Worksheet Solution1

In this page variation worksheet solution1 we are going to see solution of practice questions from the worksheet variation worksheet.

Question 1

If the cost of 8 kgs of rice is \$ 160, then the cost of  18 kgs rice is

Solution:

Let "x" be the required cost

Quantity of rice                          Cost of rice (per kg)

8 kg                                           \$ 160

18 kg                                                x

As the quantity of rice increases the cost of rice increases. It is in direct variation.

8 x x  = 18 x 160

X = (18 x 160)/8

x = 2880/8

x = 360

(1) \$ 480

(2) \$ 180

(3) \$ 360

(4) \$ 1280

Question 2

If the cost of 7 mangoes is \$ 35, then the cost of  15 mangoes is

Solution:

Let "x" be the required cost

No of mangoes                          Cost of mangoes

7                                            \$ 35

15                                              x

As the number of mangoes increases the cost of mangoes. It is in direct variation.

7 x x = 35 x 15

X = (35 x 15)/7

x = 525/7

x = 75

(1) \$ 75

(2) \$ 25

(3) \$ 35

(4) \$ 50

Question 3

A train covers a distance of 195 km in 3 hours. At the same speed,the distance traveled in 5 hours is

Solution:

Let "x" be the distance traveled

Distance traveled                       Time taken (in hours)

195                                       3 hours

x                                         5 hours

As the time taken by the train is increases the distance traveled is also increases

195 x 5 = x x 3

(195 x 5)/3 = x

X = (195 x 5)/3

X = 975/3

x = 325

(1) 195 km

(2) 325 km

(3) 390 km

(4) 975 km variation worksheet solution1  variation worksheet solution1