medium · GMAT Quant
Machine A alone fills a tank in 6 hours. Machine B alone fills the same tank in 10 hours. Both machines start together, but Machine A is shut off after working for 2 hours.
How many additional hours does Machine B alone need to finish filling the tank?
- (11)/(3)
- (14)/(3)
- 5
- (17)/(3)
- 7
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