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

A. 10 %
B. 15 %
C. 20 %
D. 25 %
Explanation:
Let the 3rd number be 100.
Then 1st number = 70,
2nd number = 63
2nd number is less than 1st by = (7/70 ×100) % = 10 %