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Start the planIf 5 people, each working at a constant rate can wash 8 cars in 40 mins, How many people working at a same constant rate are needed to wash a cars in b hours?
A) $$\frac{a\ }{60b}$$
B)$$\frac{5a}{12b}$$
C)$$\frac{a}{12b}$$
D)$$\frac{a}{20b}$$
E) $$\frac{25a}{b}$$
A) $$\frac{a\ }{60b}$$
B)$$\frac{5a}{12b}$$
C)$$\frac{a}{12b}$$
D)$$\frac{a}{20b}$$
E) $$\frac{25a}{b}$$
