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Problem #90 · October 25, 2026

Common fractions

There are 32 pupils in the class, and girls make up 38\frac{3}{8} of them. How many girls are there in the class?
  1. A4
  2. B24
  3. C20
  4. D12
  5. E96

WORKED EXAMPLE

Solution

To find a part of a number, the number is multiplied by this fraction: 32⋅38=32⋅38=1232\cdot\frac{3}{8}=\frac{32\cdot3}{8}=12. That is, first we find one part using 32:8=432:8=4, and then by doing 4⋅3=124\cdot3=12 we take three parts.
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