The ratio 9

The ratio of the present age of Rahul and Rohit is 5:7. Four years ago, Rohit age is 12 more than Raul's age. Then find their present age.

Correct answer:

a =  30
b =  42

Step-by-step explanation:

a:b=5:7 b4 = 12 + (a4)  7a=5b b4=12+(a4)  7 a=5 b b4=12+(a4)  7a5b=0 ab=12  Row271 Row1Row2 7a5b=0 0.29b=12  b=0.2857142912=42 a=70+5b=70+5 42=30  a=30 b=42



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