John is now 3 times as old as his brother Sam. In 5 years, John will be twice as old as Sam will be then. Find their present ages.

Question

John is now 3 times as old as his brother Sam.     In 5 years, John will be twice as old as Sam will be then.     Find their present ages.

anonymous · Answer

Solve the following for j and s:
{ j = 3 s, (j + 5) =2 ( s + 5) }
j = 15, s = 5

lalaly · Answer

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anonymous · Answer

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lalaly · Answer

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anonymous · Answer

yea lol

anonymous · Answer

Thank you for the medal.

lalaly · Answer

let johns age=j
sams age=s

so johns age after 5 years=j+5
w nafs el shee la sams age

bel nsbeh la 
John is now 3 times as old as his brother Sam
j=3s

w la
 In 5 years, John will be twice as old as Sam will be then
j+5=2(s+5)

solve that equation
bema enno j=3s
substitute 3s in j in the second equation

3s+5=2(s+5)
3s+5=2s+10
s=5

so sams age is 5
and johns age is 5*3= 15

lalaly · Answer

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anonymous · Answer

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lalaly · Answer

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anonymous · Answer

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anonymous · Answer

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lalaly · Answer

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anonymous · Answer

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lalaly · Answer

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anonymous · Answer

oh ok i will check