Question 1024870
basic formula is r * p * t = q


r is the rate that each person works at.
p is the number of people.
t is the time it take.
q is the quantity of work produced.


you have:


r = what you want to find.
p = 20
t = 6
q = 112 meters of wall.


r * p * t = q becomes r * 20 * 6 = 112.


solve for r to get r = 112/120.


r * p * t = q now becomes 112/120 * 20 * 6 = 112.


evaluate that equation to get 112 = 112, confirming the value of r is correct.


you want to know how many feet of wall 25 people can make in 3 days.


r * p * t = q becomes 112/120 * 25 * 3 = q


solve for q to get q = 112/120 * 25 * 3 = 70.


evaluate 112/120 * 25 * 3 = 70 to get 70 = 70, confirming the solution is correct.


your solution is that 25 people working at the same rate as before will make 70 feet of wall in 3 days.