Question

10 pipes of same size fill a tank in 28 minutes. If 2 pipes goes out of order , how long will the remaining pipes take to fill the tank?

Answer 1

Answer:

35 mins

Step-by-step explanation:

this is an inverse proportion and in an inverse proportion you must multiply x1 and y1 and divide by x2 or y2 depends on which one is given

ex:-

(x1*y1)/ x2 or y2