Answer:
Brian can mow 2 lawns or wash 1 car in an hour. Edison can do one of each and Kevin can mow 1 lawn or wash 2 cars.
a. All three send their time mowing lawns:
= (2 * 10) + (1 * 10) + (1 * 10)
= 40 lawns
No cars washed.
b. All three spend all their time washing cars.
No lawns.
Cars washed = (1 * 10) + (1 * 10) + (2 * 10)
= 40 cars washed
c. All three spend half their time on each activity.
Half their time = 5 hours.
Lawns mowed = (2 * 5) + (1 * 5) + (1 * 5)
= 20 lawns mowed
Cars washed = (1 * 5) + (1 * 5) + (2 * 5)
= 20 cars washed
d. Kevin spends half his time on each activity, while Brian only washes cars and Edison only mows lawns. (D)
Lawns mowed = (1 * 5) + (1 * 10)
= 15 lawns mowed
Cars washed = (2 * 5) + (1 * 10)
= 20 cars washed
