Bill can hit 437 golf balls in 23 hours.
Explanation:
Bill’s unit rate of golf balls per hour is:
323 ÷ 17 = 19
19 golf balls per hour
To find how many golf balls Bill can hit in 23 hours, multiply:
19 • 23 = 437
Therefore, Bill can hit 437 golf balls in 23 hours.
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-SpaceMarsh