Question

a) what is the total percentage of water used for the faucet, shower, and bath?
b) what percentage is used by the dishwasher and the clothes washer?
c) which two uses together account for about half of the water used per day?

Explanation:

Step1: Find the percentage for faucet, shower and bath

From the pie - chart, faucet is \(15\%\), shower is \(17\%\) and bath is \(2\%\).

$$15\%+17\% + 2\%$$

Step2: Calculate the sum

$$15 + 17+2=34$$

Step3: Find the percentage for dishwasher and clothes washer

Dishwasher is \(27\%\) and clothes washer is \(21\%\)

$$27\%+21\%$$

Step4: Calculate the sum

$$27 + 21=48$$

Step5: Check which two uses sum to about \(50\%\)

Dishwasher (\(27\%\)) and clothes washer (\(21\%\)) sum to \(48\%\approx50\%\)

Answer:

a) \(34\%\)
b) \(48\%\)
c) Dishwasher and clothes washer.