Question

If 4/7 of a fish tank can be filled in 2 minutes, how many minutes would it take to fill the entire tank?

Select one:
a. 2.25 minutes
b. 2.5 minutes
c. 3 minutes
d. 3.5 minutes

Answer 1

3.5 minutes.  1 part filled in 2/4 min and so 7 parts filled in 7 * (2/4) = 3.5