Pupils 81741

There are 28 pupils in the class. The ratio of boys to girls is 3:5. Count the number of girls.

Correct answer:

b =  17.5

Step-by-step explanation:

a+b=28  a:b=3:5 = a/b  5a = 3b  3b/5+b=28  3 b/5+b=28  8b=140  b=8140=17.5  b=235=17.5



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