Question

A whole number is increased by 7 and the new number so obtained is multiplied by 5; the result is 45. Find the whole number.

Answer 1

Let the required whole number = x

Then (x + 7) × 5 = 45

`=> (("x" + 7) xx 5)/5 = 45/5`   (Dividing by 5)

⇒ x + 7 = 9

⇒ x = 9 - 7

x = 2

∴ Required whole number = 2