Pipe A can fill a tank in , and pipe B can fill it in . If both pipes are opened together, how long will they take to fill the empty tank completely?

Answer and explanation

Correct answer: D.

  1. Step 1: Rate of pipe A is tank per hour, and rate of pipe B is tank per hour.
  2. Step 2: Combined filling rate is tank per hour.
  3. Step 3: Time required is .
Answer
.
Why not the others: evaluates ; averages the two times. does not fit.

Practise more Quantitative aptitude and arithmetic.

Free questions with an explanation for every one, and full timed CUET UG mock tests.

Pipe A can fill a tank in 10 hours, and pipe B can… | CUET UG