Question

Kelly and Greta are asked to write an equation for the scenario below. "One person was able to plant 4 trees in the same amount of time that 5 people working together were able to plant 20 trees," The girls agree that x represents the number of people working and y represents the number of trees planted. Kelly wrote 1 the equation y = 7X, and Greta wrote the equation Y = 4x. Which person is correct, and why? O Kelly is correct; each person plants , more trees than the person before them. O Kelly is correct; 1 = 4 X4 and 5 = 4 O Greta is correct; each person plants 4 more trees than the person before them. O Greta is correct; 4=4x1 and 21=4x5.

Answer 1

one person: 4 trees

5 people: 20 trees

x = number of people working

y= number of trees planted

So, each people plants 4 trees:

1 person =4 trees:

5 people 20 trees = 20/5 = 4 trees per person

Greta is correct, because:

4 = 4 x1 ( one person 4 trees)

and 20 = 4 x 5 ( 5 people 20 trees)