# The ratio of two numbers is 3:4 and their HCF is 15. Then the sum of the two numbers is:

**Answer: (1) 105 **

**Explanation:-**

The ratio of two numbers = 3: 4

Let the two numbers be 3 X & 4 X

Then the H. C. F. of two numbers = X = 15

Therefore, two numbers 3 X = 3 x 15 = 45 & 4 X = 4 x 15 = 60

Then sum of two numbers = 60 + 45

= 105

Hence, the answer is (1) 105.