Question

Number if decreased by 30%, becomes 630. The number is​

Answer 1

Answer:

dont mind the handwriting and quality of the pic.....

Answer 2

Number if decreased by 30%, becomes 630. The number is​ 900

Let the number to be decreased be x.

Represent the percentage in decimal form. Eg. for 10%, the decimal representation is 0.1. So, for 30% the decimal representation is 0.3

If a number is to be decreased by some percentage, subtract the decimal represented number from 1. So, 1 - 0.3 = 0.7

Multiply the result obtained with the number to be decreased to get the decreased number. So, x × 0.7 = 0.7x.

Thus, when x is decreased by 30%, we get 0.7x.

From the question, the decreased number is 630, so,

0.7 x = 630

So, x = (630 ÷0.7) = 900

Thus the number to be decreasd is 900.