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A fish tank can be filled in 10 minutes ...

A fish tank can be filled in 10 minutes using both pumps A and B simultaneously. However, pump B can pump water in or out at the same rate. If pump B is inadvertently run in reverse, then the tank will be filled in 30 minutes. How long would it take each pump to fill the tank by itself ? (Use Cramer's rule to solve the problem ).

Text Solution

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The correct Answer is:
`=(60)/(2)=30`
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