Gardeners 2818

Five equally skilled gardeners mowed one-third of the park in 12 hours. How many gardeners need to be called to mow the rest of the park in 8 hours?

Correct answer:

n =  10

Step-by-step explanation:

8·(n+5)= 2/3 · p

p = 180
24n-2p = -120

Pivot: Row 1 ↔ Row 2
24n-2p = -120
p = 180

p = 180/1 = 180
n = -120+2p/24 = -120+2 · 180/24 = 10

n = 10
p = 180

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