Question

what least number must be subtracted from each of the numbers 20,29,48 & 75 to make them proportional?

Answer 1

Answer:

To be in proportion, we subtract x from each number

14−x:17−x=34−x:42−x

⇒

17−x

14−x

=

42−x

34−x

⇒(14−x)(42−x)=(34−x)(17−x)

⇒x

2

−56x+588=x

2

−51x+578

⇒5x=10

⇒x=2