at present the sum of the ages of a father and the son is 60. what will be the some of their ages after 15 years
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Sum of the ages of the father and the son after 15 years will be 75.
Priyangshu11:
plz share with detail
As there are no conditions provided regarding their ages, simply add 15 to their present sum of ages.
this is wrong ans. ..after 15 yrs the ages of both will be increased. ..so total 2*15 = 30 will increase. ..
so the sum of their ages after 15 yrs will be 60+30
Why 2*15 ? And moreover their ages will increase at the same rate as at the present time.
okk let see by an example. ...my age is 10 and ur is 5 (let)...so at present our total age (10+5)= 15 ...after 15 yrs my age will be 10+15=25 and ur age will be 5+15=20...so after 15 years sum of our age will be 25+20=45...so increase = 45-15=30
becoz 15 yrs will be increased in both cases
so total 30 yrs will increase
Answered by
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let at present son's age x n father's age y
x+y=60
after 15 yrs sum will be 60+2*15= 90 yrs
x+y=60
after 15 yrs sum will be 60+2*15= 90 yrs
I m sure
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