Question

6. The cost of 7 copies of a book is 3980. Find the cost of 15 copies of the same book at the same rate. 7. The label on a snack states that there is 3.2 g of fat in 100 g. If you eat 250 g of that snack, how fat will you consume? 8. The two numbers are in the ratio of 3:7. If 7 is subtracted from each of them, then their ratio becomes 2:7. Find the numbers. 9. A bag contains 5,2 and 1 coins in the ratio of 3:5:2, amounting to 216. Find the number of coins of each type respectively. 10. During the sunny day, the shadow of vertical pole of height 15 m is 20 m in length. Find the length of the shadow of pole of length 120 m at the same time.​

Answer 1

Answer:

Step-by-step explanation:

6. Step-by-step explanation:

1. Divide 3980 and 7,Then you will get the cost of one copy of book.

The cost of one book copy is 568.57

2. To find the cost of 15 copies of book multiply 568.57 with 15

Then u will get 8528.55.

3.This means 15 copies of books cost Rs. 8528.55

. $\frac{3980}{7} X15\\=8528.55$

Answer 2

1. Divide 3980 and 7,Then you will get the cost of one copy of book.

The cost of one book copy is 568.57

2. To find the cost of 15 copies of book multiply 568.57 with 15

Then u will get 8528.55.

3.This means 15 copies of books cost Rs. 8528.55

7

3980

X15

=8528.55