leela and her grandmather differ in their ages by 60 yrs. After 10 yrs if the sum of their ages is 100 yrs, what are their present ages
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here is your answer mate......
hope it helps u....
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let leela's age be y and her grandma's age be x
x-y=60...(1)
(x+10)+(y+10)=100
x+y+20=100
x+y=100-20
x+y=80...(2)
x+y=80
x-y.=60
2x=140
x=70 years
x+y=80
70+y=80
y=80-70
y=10 years
hence, their present ages are 10 and 70 years...
hope this helps:-)
x-y=60...(1)
(x+10)+(y+10)=100
x+y+20=100
x+y=100-20
x+y=80...(2)
x+y=80
x-y.=60
2x=140
x=70 years
x+y=80
70+y=80
y=80-70
y=10 years
hence, their present ages are 10 and 70 years...
hope this helps:-)
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