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If (a+b):(a-b)=15:1 then the value of a^...

If `(a+b):(a-b)=15:1` then the value of `a^(2)-b^(2)` is:

A

56

B

15

C

112

D

8

Text Solution

Verified by Experts

`((a + b))/((a - b)) = 15/1 implies a/b = 8/7` (by componendo and dividendo)
Therefore `a^2 - b^2 = 64 -49 = 15
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