When Edna had one cat, she needed to serve 2 1/2 tins of cat food each day. Now that Edna has adopted a second cat, she needs to serve a total of 3 5/8 tins each day. How much extra food is needed to feed the second cat?Write your answer as a fraction or as a whole or mixed number.
Question
When Edna had one cat, she needed to serve 2 1/2 tins of cat food each day. Now that Edna has adopted a second cat, she needs to serve a total of 3 5/8 tins each day. How much extra food is needed to feed the second cat?Write your answer as a fraction or as a whole or mixed number.
Solution
To find out how much extra food is needed to feed the second cat, we need to subtract the amount of food needed for one cat from the total amount of food needed for two cats.
The amount of food needed for one cat is 2 1/2 tins each day.
The total amount of food needed for two cats is 3 5/8 tins each day.
First, we need to convert these mixed numbers to improper fractions to make the subtraction easier.
2 1/2 = 2 + 1/2 = 4/2 + 1/2 = 5/2
3 5/8 = 3 + 5/8 = 24/8 + 5/8 = 29/8
Now, subtract the amount of food for one cat from the total amount for two cats:
29/8 - 5/2 = 29/8 - 20/8 = 9/8
So, the extra food needed to feed the second cat is 9/8 tins each day, which can also be written as 1 1/8 tins each day.
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