the difference between the age of the two brothers today is 4 year 5 years ago the ratio of their age was 5:7 in find the age of younger brother
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let x=age of older brother
x-4=age of younger brother
5 yrs ago:
x-5=age of older brother
x-4-5=x-9=age of younger brother
x-9/x-5=5/7
5x-25=7x-63
2x=38
x=19
x-4=15
age of younger brother=15
x-4=age of younger brother
5 yrs ago:
x-5=age of older brother
x-4-5=x-9=age of younger brother
x-9/x-5=5/7
5x-25=7x-63
2x=38
x=19
x-4=15
age of younger brother=15
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