Question

Two numbers are less than a third number by $30$% and $37$% respectively. The percent by which the second number is less than the first is

• A. $10$
• B. $7$
• C. $4$
• D. $3$

Answer 1

The correct option is A $10$

Let the third number be $100$
The first number is $70$ and second number is $63$.
% the second number is less than the first
$=\frac{(70-63)}{70}\times =\frac{7}{70}\times 100$ = $10$%