Math word Problem?

Recovering golf balls. Susan and Joan are diving for golf balls in a large water trap. Susan recovers a golf ball ever 0.016 hour while Joan recovers a ball every 0.025 hour. If both are working, then at what rate (in golf balls per hour) are they recovering golf balls?

Need to find number of golf balls recovered in 1 hour.
Restated, 1 hour divided by how many golf balls = 1 ball recovered 0.016 hour for Susan?
x being the number of golf balls recovered in 1 hour, solve for x:
1 hour divided by x = 0.016
x times 0.016 = 1
x = 1 divided by 0.016
x = 62.5 (I would imagine this is an average based on data collected over time since we can’t recover half a golf ball)

For Joan:
1 hour divided by x = 0.025
x times 0.025 = 1
x = 1 divided by 0.025
x = 40

Susan’s 62.5 plus Joan’s 40 golf balls per hour = 102.5 per hour (average)

Scott Lokken Diving for Golf Balls – TPC Twin Cities

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