Question

A number exceeds other number by 12. If their sum is 72, find the numbers

Answer 1

let the unknown numbers be x and y.
 a/q
   x = y + 12 ..... i)
 and
   x + y = 72
⇒ x = 72 - y. ..... ii)

on substituting value of x in equation 1, we get
               72 - y = y + 12
           ⇒  72 - 12 = 2y
           ⇒ y = 60/2
           ∴ y = 30

by placing value of y in ii), we get
           x = 72 - 30
         ∴ x = 42

so, the numbers required are 42 and 30.

Answer 2

Answer:

Step-by-step explanation:

Given :-

A number exceeds other number by 12.

Their sum is 72.

To Find :-

The Numbers.

Solution :-

Let the 1st number be x.

And the 2nd number be x + 12

According to the question

x + x + 12 = 72

⇒ 2x + 12 = 72

⇒ 2x = 72 – 12

⇒ 2x = 60

⇒ x = 30

1st Number = 30

2nd Number = 30 + 12 = 42

Hence, the numbers are 30 and 42.