Amaya has an inflatable pool that she filled 3/4 full for her cousin on a hot summer day. After playing all day, the pool was 3/10 full. How much of the water was lost? Simplify your answer. (1 point)
Responses
1840
Start Fraction 18 over 40 End Fraction
37
Start Fraction 3 over 7 End Fraction
920
Start Fraction 9 over 20 End Fraction
16
Start Fraction $\dfrac{3}{4} - \dfrac{3}{10}$ End Fraction
To subtract the fractions, we need a common denominator. The least common multiple of 4 and 10 is 20.
$\dfrac{15}{20} - \dfrac{6}{20} = \dfrac{9}{20}$
So, $\dfrac{9}{20}$ of the water was lost.