Noj is 5 years older than Jacob.

label Algebra
account_circle Unassigned
schedule 1 Day
account_balance_wallet $5

The product of their age is 84. how old is Noj?

Dec 16th, 2014

n= Noj j= Jacob

J+5=N

N+J=85

Substitute the first equation into the second equation for N

(J+5)+J=85

combine like terms and subtract 5 from both sides

2J=80

divide both sides by 2 

J=40

N=45


Dec 16th, 2014

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