0 votes
382 views
in Mathematics Form 3 by

A water vendor has a tank of capacity18,900 litres. The tank is being filled with water from two pipes A and B which are closed immediately when the tank is full. Water flows at the rate 150,000cm3/minute through pipe B.

  1. If the tank is empty ,and the two pipes are opened at the same time, calculate the time it takes to fill the tank.
  2. On a certain day the vendor opened the two pipes A and B to fill the empty tank. After 25 minutes he opened the outlet tap to supply water to his customer at average rate of 20 litres per minute. Calculate the time it took to fill the tank on that day. 

1 Answer

0 votes
by
  1.   150,000
    +120,000
       270,000cm3/min
    270 c/min
    18,900= 70min
          270
     
  2. 270 l/min x 25 =6,750 litres by one
    He opened to his custom
    18,900- 6750 = 12,150 litres
    Rate of filling = 270-20=250
    483/5min

Related questions

Welcome to EasyElimu Questions and Answers, where you can ask questions and receive answers from other members of the community.

5.5k questions

6.4k answers

8 comments

590 users

...