V. Read the problem carefully and answer the questions that follow. Write your answer on the space provided.
1. One pipe can fill a tank in 25 minutes while a larger pipe can fill it in 20 minutes.
a. What part of the tank can the smaller pipe fill in 1 minute?
b. What part of the tank can the larger pipe fill in 1 minute?
C. If we let x = the number of minutes it will take both pipes to fill the tank, then what part of the tank can both pipes fill in 1 minute?
d. If both pipes are open, what mathematical sentence best translates the problem?
e. If both pipes are open, how long will it take to fill the tank? ​