Data Sufficiency

Three hoses, \(x, y,\) and \(z,\) each pump water at a constant rate into a \(70,000\)-gallon tank. How long will it take the hoses to fill the tank up the \(30,000\)-gallon mark?

1. The \(3\) hoses working simultaneously can fill half the tank in \(5\) hours

2. Hose \(y\) pump water at half the rate of \(x\)

OA A