This was originally posted on the end of another student''s post.
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
2/5 + 1/3 = 6/15 + 5/15 = 11/15 eaten.
15/15 - 11/15 = 4/15 remained.
To find out how much cake is left after the boys finished eating, we need to subtract the amount of cake the boys ate from the total amount of cake at the celebration.
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.