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Julio's father is 4 times as old as Julio. The sum of their ages is no less than 55.

What is the youngest age Julio can be?

 Sep 11, 2019
 #1
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let's make a key:

Julio's age = x

Julio's father's age = 4x

the sum of their ages is no less than 55, so it's equal or more than 55. we have this inequality:

4x+x > 55

5x>55

x>11

so the youngest Julio can be is 11 years old

 

:)

 
 Sep 11, 2019

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