Question

Two number are less than a third number by 30% and 37% respectively. How much percent is the second number less than the first.

• A. 10%
• B. 7%
• C. 4%
• D. 3%

Answer 1

The correct option is A 10%

Let, third number be x.

Then, First number = 70% of x

$=\frac{7x}{10}$

Second number = 63% of x

$=\frac{63x}{100}$

Required Percentage

$=(\frac{7x}{100}\times \frac{10}{7x}\times 100)\%=10\%$