Question

42. If a pipe can drain a tank in t hours, what part of the tank does foes it drain in 3 hours? A. 3t B. t/3C. t + 3D. 3/t

Answer 1

Let us assume that the volume of a full tank is 1

If the tank can drain the full tank in t hours, it means that

1 = t

Let x represent the volume of the tank that would be drained in 3 hours. It means that

x = 3

We would solve both equations for x

1 = t

x = 3

By crossmultiplying,

xt = 3

x = 3/t

Thus, the correct option is D