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Grade-5
Divide Whole Numbers By Fractions - Word Problems
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A gym class is having peanuts for a snack. A serving size of peanuts is
3
7
of a cup. If there are 21 cups of peanuts, how many students can get a snack?
Explanation
21 ÷ 3/7
21/1 ÷ 3/7
Keep the first fraction as it is. Change division sign to multiplication and flip the second fraction.
21/1 x 7/3
Now, it can be done as multiplication of fractions.
Multiply both numerators together to get new numerator and multiply both denominators together to get new denominator
= (21 x 7)/(1 x 3)
= 147/3
That can be simplified to
= 49
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