Problema Solution
noj is 5 years older than jacob. the product of their ages is 84. how old is noj
Answer provided by our tutors
let
n = the age of noj, n>0
j = the age of jacob, j>0
noj is 5 years older than jacob
n = 5 + j
j = n - 5
the product of their ages is 84
n*j = 84
plug j = n-5 into the last equation
n(n - 5) = 84
by solving we find
n = 12 years
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noj is 12 years old now.