The difference 8

The difference between the ages of two brothers is 10 years, and 15 years ago their ages were in the ratio 2:1.Find the ratio of their ages 15 years hence .

Correct answer:

r15 =  5:4

Step-by-step explanation:

a=b+10 (a15):(b15) = 2:1  a15 = 2 (b15)  (b+10)15=2 (b15)  b=25  b=125=25  b=25  a=b+10=25+10=35  r15=b+15a+15=25+1535+15=1.25=5:4

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