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Question

Taps Q and R can fill a tank in 24 minutes and 32 minutes, respectively. The efficiency of tap S is 75% greater than that of tap Q. If tap R's efficiency is increased by 66⅔%, calculate the time it would take for taps S and the modified R to fill the tank together.

A 12 minutes

B 8 minutes

C 10 minutes

D 6 minutes

E 15 minutes

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