Question

The sum of three numbers is 90. If the ratio of first two numbers is 4:5 and that of the second to the third is 5:9, then the third number is?

• A. 20
• B. 45
• C. 25
• D. 90
• E. none

Answer 1

The correct option is B

45

Let 4x, 5x, 9x be the numbers.

So 18x = 90
Therefore, x= 5
So, the third number is 9$\times$5=45