present ratio of a:b is 4:5 .18 year ago this ratio was 11:16 find the sum of present age?

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1 Answer

4x-18/5x-18 = 11/16                                                let, the present age are 4x and 5x

Or,16(4x-18)=11(5x-18)

or,16(4x)-11(5x)=18(16-11)

or,64x-55x=90

or,9x=90 or,x=10                                               So Sum of Present Age is 40+50=90               Safal Das Biswas
by Level 4 User (7.9k points)

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