A number decreased by 30% gives 84. The number is

Question

Philoid · Accepted Answer

Let the number = Z

∴ Z – (30% of Z) = 84

⇒ Z – (Z × 30/100) = 84

⇒ Z – 30 Z/100 = 84

⇒ 70 Z/100 = 84

⇒ Z = 84 × 100/70

⇒ Z = 12 × 10

⇒ Z = 120