If (a-b):(a+b)=1:11, find the ratio (5a+4b+15):(5a-4b+3).

Asked by shubham rastogi | 23rd Jul, 2013, 11:04: PM

Expert Answer:

(a-b):(a+b)=1:11
Or 11 (a-b)=a+b
Or 11a-11b=a+b
Or 11a-a=b+11b
Or 10a=12b
Or 5a=6b
Now, (5a+4b+15):(5a-4b+3)
=(6b+4b+15): (6b-4b+3)
=(10b+15):(2b+3)
=5 (2b+3):(2b+3)
=5

Answered by  | 25th Aug, 2013, 11:43: PM

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