Road repairs

A 16 1/2 kilometer stretch of road needs repairs. Workers can repair 2 1/4 kilometer of road per week. How many weeks will it take to repair this stretch of road?

Correct answer:

w =  7.3333

Step-by-step explanation:

s=1612=16 2+12=332=16.5 km r=214=2 4+14=94=2.25 km  w=s/r=16.5/2.25=223=713=7.3333

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