Question

10% of what number is 43?

Answer 1

Method 1

10%     -  43    |multiply both sides by 10

100%  -   430

Answer: 43 is 10% of 430.

Method 2

10%      -    43
100%    -    x
/cross multiply/

10x = 100·43
10x = 4300    |divide both sides by 10
x = 430

Answer: 43 is 10% of 430.