15 points

calculate the muscular work completed by four men. four men carry 20 boxes each up a ramp as shown. each box weighs 5 pounds. remember that muscular work is calculated by multiplying the weight by the vertical distance. in the calculation, disregard the weight of the men and consider only the muscular work done carrying the boxes.

a. 600 ft lbs

b. 1200 ft lbs

c. 2400 ft lbs

d. 3600 ft lbs

The muscular work completed by four men will be 2400 ft. lbs.

Step-by-step explanation:

See the diagram of the ramp.

Four men carry 20 boxes each up a ramp as shown.

So, 4 men carry total (4 × 20) = 80 boxes up the ramp and each box weighs 5 pounds.

Then, the 4 men carry total (80 × 5) = 400 lb weight up the ramp.

Now, the vertical height of the ramp from the ground level is 6 ft.

Hence, the muscular work completed by four men will be (400 × 6) = 2400 ft. lbs. (Answer)

7

step-by-step explanation:

the answer would be 7

the solution, from the graphing of the two lines, is (3,2), i.e., x = 3, y = 2.