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6 taps can fill a tank in 4 hours. Because of a fault, only 4 taps work. By how many HOURS will the filling time increase compared to the original 4 hours?

Class 8Direct and Inverse ProportionsDirect and Inverse Proportions
  • A3
  • B2
  • C1
  • D4

Step-by-Step Solution

Taps and time are inversely proportional. Work = tap-hours. With 4 taps: hours. Increase = 6 - 4 = 2 hours.
Answer: B) 2

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