Question

Two pipes can together fill a tank in 40/13 minutes. if the one pipe takes 3 min more than the other to fill it , find the time in which each pipe can fill the tank

Answer 1

pipe a in 1 hour =
$\frac{1}{x}$
pipe b in 1 hour =
$\frac{1}{x + 3}$
$\frac{1}{x} + \frac{1}{x + 3} = \frac{13}{40}$
40=169 +39
${x}^{2}$
40=208 x2