At the beach, Garrett and his sister both built sandcastles and then measured their heights. Garrett's sandcastle was 9/10 of a foot tall and his sister's was 3/5 of a foot tall. How much taller was Garrett's sandcastle than his sister's?Write your answer as a fraction or as a whole or mixed number.
Question
At the beach, Garrett and his sister both built sandcastles and then measured their heights. Garrett's sandcastle was 9/10 of a foot tall and his sister's was 3/5 of a foot tall. How much taller was Garrett's sandcastle than his sister's?Write your answer as a fraction or as a whole or mixed number.
Solution
To find out how much taller Garrett's sandcastle was than his sister's, we need to subtract the height of his sister's sandcastle from the height of Garrett's sandcastle.
Garrett's sandcastle was 9/10 of a foot tall and his sister's sandcastle was 3/5 of a foot tall.
First, we need to make sure the fractions have the same denominator. In this case, we can multiply the numerator and denominator of 3/5 by 2 to get 6/10.
So, now we have:
Garrett's sandcastle: 9/10 foot His sister's sandcastle: 6/10 foot
Now, subtract the height of his sister's sandcastle from the height of Garrett's sandcastle:
9/10 - 6/10 = 3/10
So, Garrett's sandcastle was 3/10 of a foot taller than his sister's.
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