Question

Five spraying machines working together can finish painting a house in 36 minutes if two machines break down then in how much time can the remaining machine can do the jobs

Answer 1

Answer:

no. of machines is inversely proportional to amount of time.

therefore,

5 = k × 1/36

k = 5 × 36 = 180

if 3 machines are left,

3 = k × 1/x

3 = 180/x

x = 180/3 = 60

therefore, if 2 machines break down the job will be completed in 60 minutes.

Hope it helps.

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Answer 2

Answer:

60 minutes or 1 hour

Step-by-step explanation: