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3 years ago

13

I like to help in this problem: in the course of Juan 2/9 of the students are children of 13 years, 1/4 have 14 years and the re

st 15 years What kind of students do they have?

1 answer:

taurus [48]3 years ago

3 0

Rest are 19/36

it is 1 -(1/4) - (2/9)
= 1-9/36 - 8/36
= (36-9-8)/36
= 19/36.

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