The ratio of two numbers is 3 : 4 and their sum is 630 . The smaller one of the numbers is __
A
360
B
270
C
180
D
120
Correct Answer: 270
Let the two numbers are 3x and 4xSum of two numbers = 3x + 4x = 7xnow, 7x = 630or, x = 90so the smoller number = 3x = 3*90 = 270