Answer:
a. 15.625%
b. 9.375%
Explanation:
The computation is shown below:
a. The percentage of water that was used is
= (5 ÷ 8) ÷ (4 liters)
= 0.625 ÷ 4
= 15.625%
b. ANd, the percentage of water that remains in the bucket is
= (3 ÷ 8) ÷ (4 liters)
= 0.375 ÷ 4
= 9.375%