Fractions 80134

There are 420 pupils in the school. Two hundred fifty-two pupils go to the 1st level. Write as a fraction what part of the pupils goes to the 1st grade and what part to the 2nd grade. Shorten both fractions to their basic form.

Correct answer:

a =  3/5
b =  2/5

Step-by-step explanation:

n=420 p=252  a=np=420252=53=0.6
d=np=420252=168  b=nd=420168=52=0.4

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