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It took 4 hours for Nancy and her two friends to paint her living room and dining room. How long would it have taken Nancy and one friend to paint it ?

Sagot :

Answer:

6 hours.

Step-by-step explanation:

Number of people N is inversely proportional to the number of hours H for painting, that is

N = k / H, when N = 3 (Nancy and two friends) and H = 4 hours

k = NH

k = 3 × 4

k = 12.

Therefore,

N = 12/ H and

H = 12 / N then when N = 2 ( Nancy and one friend)

H = 12 / 2

H = 6

Hence, it will take Nancy and one of her friend to paint her living room and dining room for 6 hours.