2/5 + 1/3 = 6/15 + 5/15 = 11/15 eaten.
15/15 - 11/15 = 4/15 remained.
at a celebration, the girls ate 2/5 of the cake. The boys then ate 1/3 of the cake. How much cake was left after the boys finished eating
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posted by Zariah
today at 8:14pm
15/15 - 11/15 = 4/15 remained.
First, let's define the fraction of cake the girls ate. According to the problem, the girls ate 2/5 of the cake.
Next, we need to find the fraction of cake the boys ate. The boys ate 1/3 of the cake.
To determine how much cake is left, we subtract the sum of the fractions the girls and boys ate from 1 (since 1 represents the whole cake). This will give us the fraction of cake that is left.
So, the calculation would be:
1 - (2/5 + 1/3)
To simplify this, we need to find a common denominator for 5 and 3, which is 15. Then we can convert the fractions:
1 - (6/15 + 5/15)
1 - 11/15
Therefore, there would be 4/15 of the cake left after the boys finished eating.