Question

a number when decreased by 18% gives 533, find the number

Answer 1

Step-by-step explanation:

Let the required number be x.

It decreased by 18 % and becomes 410.

Then according to the question.

⇒ x/1 - (x*18)/100 = 410

Taking L.C.M. of the denominator and then solving it.

⇒ x/1 - 9x/50 = 410

⇒ (50x - 9x)/50 = 410

⇒ 41x/50 = 410

⇒ 41x = 50*410

⇒ 41x = 20500

⇒ x = 20500/41

⇒ x = 500

So, the required number is 500.