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Chance can wash the car in 2 hours, while Sandy can wash the same car in 4 hours. How many hours would it take for them to wash the car together?


four thirds


three fourths


3


4

Verified Answer :

Answer:  First Option is correct.

Step-by-step explanation:

Since we have given that

Number of hours Chance can wash the car = 2 hours

Number of hours Sandy can wash the car = 4 hours

Work done by Chance per hour is given by

\(\frac{1}{2}\)

Work done by Sandy per hour is given by

\(\frac{1}{4}\)

Work done by altogether per hour is given by

\(\frac{1}{2}+\frac{1}{4}\\\\=\frac{2+1}{4}\\\\=\frac{3}{4}\)

So, Number of hours they take if they together wash the car is given by

\(\frac{4}{3}\)

Hence, First Option is correct.

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