Question

65% of a number is 21 less then 4/5 of that numberwhat is number

Answer 1

Let's assume the required number as x

According to Question,

65% of x = 4 / 5 of x - 21

⇒ 65 / 100 × x = 4x / 5 - 21

⇒ 13x / 20 = 4x / 5 - 21

⇒ 13x / 20 = (16x - 420) / 20

⇒ 13x = 16x - 420

⇒ 13x - 16x = - 420

⇒ - 3x = - 420

⇒ 3x = 420

⇒ x = 420 / 3

⇒ x = 140

As, the required number is x

Hence, the required number is 140

✪ Be Brainly ✪