Question

there are two pumps to fill a tank with water first pump can fill the empty tank in 8 hours will the second in 10 hours if both the pumps are opened at the same time and kept open for 4 hours the part of the tank will be fill up is

Answer 1

Answer:

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Step-by-step explanation:

Part of tank filled by A in 1 hour= 1/8

Part of tank filled by B in 1 hour= 1/10

Part of tank filled by A and B in 1 hour

= 1/8 + 1/10

= (5+4)/40

=9/40

So, Part of tank filled by A and B in 4 hours

= 9×4/40

=9/10

9 out of 10 parts will be filled.