# Need math help with 3 pumps working 8 hours a day

**Question description**

3 pumps, working 8 hours a day, can empty a tank in 2 days. How many hours a day must 4 pumps work to empty the tank in 1 day?

If the cost of x metres of wire is d rupees, then what is the cost of y metres of wire at the same rate?

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