By what number should we multiply so that the product may be ?

RD Sharma - Mathematics

Book: RD Sharma - Mathematics

Chapter: 1. Rational Numbers

Subject: Maths - Class 8^th

Q. No. 5 of Exercise 1.7

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5

By what number should we multiply so that the product may be?

Let the required number be ‘x’

Now,

According to the question,

5

Chapter Exercises

Exercise 1.1

Exercise 1.2

Exercise 1.3

Exercise 1.4

Exercise 1.5

Exercise 1.6

Exercise 1.7

Exercise 1.8

1

Divide:
(i)

(ii)

(iii)

(iv)

(v)

(vi)

(vii)

(viii)

(ix)

(x)

2

Find the value and express as a rational number in standard from:
(i)

(ii)

(iii)

(iv)

(v)

(vi)

3

The product of two rational numbers is 15. If one of the numbers is -10, find the other.

4

The product of two rational numbers is . If one of thenumbers is , find the other.

5

By what number should we multiply so that the product may be?

6

By what number should we multiply so that the product may be?

7

By what number should we multiply so theat the product may be 24?

8

By what number should be multiplied in order to produce ?

9

Find if
(i)

(ii)

(iii)

(iv)

(v)

10

The cost of metres of rope is Rs .Find its cost per metre.

11

The cost of metres of cloth is Rs. Find the cost of cloth per metre

12

By what number should be divided to get?

13

Divide the sum of and by the product of and

14

Divide the sum of and by their difference.

15

If 24 trousers of equal size can be prepared in 54 metres of cloth. What length of cloth is required for
each trouser?