Let V = capacity. Inlet rates: V/20 and V/24 litres/min. Outlet rate: 30 L/min.
Combined: 20V+24V−30=15V.
V(201+241−151)=30.
201+241−151=1206+5−8=1203=401.
40V=30⇒V=1200 litres.
Two inlet pipes can fill a tank in 20 minutes and 24 minutes respectively . An outlet pipe can empty 30 liters of water per minute. If all three pipes working together can fill the tank in 15 minutes. The capacity of the tank is :
Held on 7 Jun 2023 · Verified 13 Jul 2026.
120 litres
1200 litres
240 litres
2400 litres
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