Which least number must be subtracted from each of the term 15, 37, 21, 55 to make them proportional ?
Answer & explanation
Correct answer: option 1
To make these numbers in proportion, the condition should be:
(15 - a) : (37 - a) :: (21 - a) : (55 - a)
Check from the option, which is the best way to find the number.
So, Option (a):- 4 will justify the equation.
(15 - 4) : (37 - 4) :: (21 - 4) : (55 - 4)
11 : 33 :: 17 : 51
1 : 3 :: 1 : 3
Therefore, 4 is correct answer.