SOLUTION: the ratio of ages of rohit and rana is 5:7 and their difference of age is 4 years.find the sum their ages.

Question 979941: the ratio of ages of rohit and rana is 5:7 and their difference of age is 4 years.find the sum their ages.
Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!
let's Rohit's age be and Rana's age be
if the ratio of ages of Rohit and Rana is (means Rohit is older), we have

or
.........solve for
......eq.1
and if their difference of age is years, we have
................solve for
......eq.2
since left sides of eq.1 and eq.2 are same, than right sides are same too
so, we have
........solve for

and
=>=>

so, the sum their ages is

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