Question

289 : 20 :: 225 :?
complete the series...

Answer 1

Answer:

289 : 20 :: 225 : 15

I hope this answer is right

Answer 2

Given:

The series is as follows: 289: 20:: 225: ?

To find:

The unknown number to complete the given series.

Solution:

Let the unknown number be x.

$\frac{289}{20} = \frac{225}{x}$

On cross multiplying we get:

289x = 225*20

On making x as the subject of the equation we get:

x = 225*20/ 289

On solving we get:

x= 15.57

Therefore the missing number would be 15.57 which would complete the given series.