the ages of Harry and Hari are in the ratio 5:7 four years from now the ratio of their ages will be 3:4 find their present age

Asked by snavinekma | 18th Nov, 2020, 08:28: PM

Expert Answer:

 
Let the present age's of Harry and Hari be 5x and 7x.
According to the condition,
begin mathsize 16px style fraction numerator 5 straight x plus 4 over denominator 7 straight x plus 4 end fraction equals 3 over 4
rightwards double arrow 4 open parentheses 5 straight x plus 4 close parentheses equals 3 open parentheses 7 straight x plus 4 close parentheses
rightwards double arrow 20 straight x space minus space 21 straight x space equals space minus 16 space plus space 12
rightwards double arrow negative space straight x equals space minus 4
rightwards double arrow space straight x equals space 4
end style
The present age's of Harry and Hari are 5x = 5(4) = 20 years and 7x=7(4) = 28 years respectively.

Answered by Yasmeen Khan | 28th Nov, 2020, 05:13: PM

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