Pumps a, b, and c operate at their respective constant rates. pumps a and b, operating simultaneously, can fill a certain tank in 6/5 hours; pumps a and c, operating simultaneously, can fill the tank in 3/2 hours; and pumps b and c, operating simultaneously, can fill the tank in 2 hours. how many hours does it take pumps a, b, and c, operating simultaneously, to fill the tank.

a. 1/3
b. 1/2
c. 1/4
d. 1
e. 5/6

D) 1 hr

Step-by-step explanation:

Given

Pump A and B can fill tank in

Pump A and C can fill tank in

Pump B and C can fill tank in

Let A be the total hr taken A therefore rate of

Let B be the total hr taken B therefore rate of

Let C be the total hr taken C therefore rate of

-----1

-----2

-----3

Adding 1,2 & 3

thus time taken by A,B and C combined is 1 hr

the answer is 15% decrease

8

step-by-step explanation:

to find the amount of gift bags to use all the supplies, find the gcf or greatest common factor. this is the largest number which multiplies evenly into each term.

48 has factors: 1, 2, 3, 4, 6, 8, 12. 16, 24, 48

80 has factors: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80

64 has factors: 1, 2, 4, 8, 8, 16, 32, 64

the highest number factor they all share in common is 8. this means there will be 8 bags with 6 pencils, 10 markers, and 8 stickers in each bag.