V. Put a / mark if the proportion shows direct proportion and X if not.
a. 12:4= 24:8
b. 8:5=4:10
Tell whether the following problems use direct proportion.
c. If 6 men can do a job in 5 days, how long will it take 3 men to do
the job at the same rate?
d. Fifteen men can do a job in 12 days. After 4 days, five men are
transferred to another job. How long will it take the remaining men to
finish the job?
e. Twelve boy scouts have enough food to last for 5 days. How long
will the food last if there are 8 boy scouts?​