Question

F two numbers are in the ratio 3 : 4 and their lcm is 72 , then the smallest number is
1) 12 2) 18 3) 32 4) 24

Answer 1

The answer is 2) 18

Step-by-step explanation:

Since the two numbers are in the ratio 3 : 4

Let the two numbers be 3x, 4x

Then the LCM is 12x

So

12x = 72

x = 6

So the smallest number is 3x = 3 × 6 = 18