Question

7. A number increased by 20% gives 42. The number is
(a) 35
(b) 28
(c) 36
(d) 30​

Answer 1

Answer:

35

Step-by-step explanation:

let the number be x

Number increased by 20% => x + 20% of x

= x + 0.2x = 1.2x

Now 1.2x = 42

x = 42/1.2 = 35

Answer 2

Answer:

35

Step-by-step explanation:

Given:

• A number increased by 20% is 42.

To Find:

• What's the number?

Solution:

Let the number be x.

A/Q,

x + 20% of x = 42

=> x + (20x)/100 = 42

=> x + x/5 = 42

=> (5x + x)/5 = 42

=> 6x/5 = 42

=> x = (42×5)6

=> x = 7×5

x = 35

Therefore, the number = 35