39. If one student can complete the decorations for the prom in 5 days working alone, another student could do it in 3 days, and a third could
do it in 4 days, how long would it take them working together?

1.3 days

Step-by-step explanation:

1/5+1/4+1/3

12/60+20/60+15/60= 47/60

60/47

=1.3

a) 0.25x times 3. (could be wrong on equation.)

b) 2.25 pound of dark chocolate. (can i eat all the chocolate? plz? anyway, again, could be wrong, but i hope im right. all the chocolate together should be 5.25 pounds)

have a good day!

the answer is d on edge

step-by-step explanation: