Question

4 of 5 What number needs to be added to 4 and 9 so that the ratio of the first number to the second becomes 2 : 3?

Answer 1

6 is the answer for the Q

Answer 2

Answer:

6

Step-by-step explanation:

Let us add x to 4 and 9 to get a ratio of 2:3. Thus

(4+x):(9+x) = 2:3, or

3(4+x) = 2(9+x), or

12+3x = 18+2x, or

3x-2x = 18–12, or

x = 6.

The answer is 6.

Check: (4+6):(9+6) = 10:15 which is the same as 2:3. Correct.