SOLUTION: Juan is 8 years younger then his brother paolo. If the product of their ages is 153, how old is juan

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Question 1167684: Juan is 8 years younger then his brother paolo. If the product of their ages is 153, how old is juan
Found 2 solutions by ikleyn, josgarithmetic:
Answer by ikleyn(52794) About Me  (Show Source):
You can put this solution on YOUR website!
.

    x*(x+8) = 153 = 9*17.



You can solve this quadratic equation or, alternatively,

you may guess the answer based on decomposition  153 = 9*17, where the factors  17  and  9  differ by  17-9 = 8 units.


ANSWER.  Juan is 9 years old.

Solved.



Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
system%28j=p-8%2Cjp=153%29

p%28p-8%29=153

Trying factorizations:
153=17%2A9
-
17-9=8
-
p=17
-
p-8=17-8=9


Juan is 9.
Paolo is 17.