Zack is 15 1/2 years old. This is 3 years younger than his brother Lou. How old is Lou

Question

Mathematics

Madison Burch

22 February, 13:18

Zack is 15 1/2 years old. This is 3 years younger than his brother Lou. How old is Lou

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Answers (1)

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Rachel Doyle · Answer 1

If you would like to know how old is Lou, you can calculate this using the following steps:

Lou ... l years old = ?

Zack ... z = 15 1/2 = 31/2 years old

Zack is 3 years younger than Lou:

z = l - 3

15 1/2 = l - 3

31/2 + 3 = l

l = 31/2 + 6/2

l = 37/2 = 18 1/2 years old

Result: Lou is 18 1/2 years old.