Multiple choice

$6$ pipes are required to fill a tank in $80\ mins$. How long will it take if only $5$ pipes of same type are used

  1. $36\ min$
  2. $56\ min$
  3. $76\ min$
  4. $96\ min$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is an inverse proportion problem. 6 pipes * 80 mins = 5 pipes * x mins. x = (6 * 80) / 5 = 96 mins.

AI explanation

By applying the inverse proportionality method for workers and time, the total work required to fill the tank is 6 pipes multiplied by 80 minutes, which equals 480 pipe-minutes. If only 5 pipes of the same type are used, the time required is the total work divided by the available pipes. Dividing 480 by 5 yields 96 minutes. It will take 96 min to fill the tank.

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