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John's father is five times older than John and John is twice as old as his sister Alice. In two years time the sum of their ages will be 58. How old is John now?

Sagot :

John's father is 5 times older than John
F = 5J
John is twice as old as his sister Alice.
J = 2A or A = .5J
In two years time, the sum of their ages will be
58.F+2 + J+2 + A+2 = 58F + J + A + 6 = 58
F + J + A = 58 - 6
F + J + A = 52:
How old is John now?:Substitute for F & A
5J + J + .5J = 52
6.5J = 52
J = 52/6.5
J = 8 yrs 
John is 8 years old
Nuketowquickscopa101
No duvt on wat I say  people are gonna think that it heated btw it s 8
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