a water tank is filled 8/10 in 60 minutes if in first 20 minutes it is filled 4/10 them how much of will be filled in next 40 minutes class 6 ex.5.5
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Answer:
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Step-by-step explanation:
Quantity of water filled by the first tap in one minute =
30
1
Quantity of water filled by the second tap in one minute =
40
1
Quantity of water emptied by the third tap in one minute =
24
1
Quantity of water filled in one minute, when all the 3 taps are opened =
30
1
+
40
1
−
24
1
=
120
4+3−5
=
120
7−5
=
120
2
=
60
1
Time taken to fill the tank =
60
1
1
=60 minutes
=1 hour
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