Question

Jing did 1/7 of a task in 3 days. How long will she take to do the whole task? Assume that she works the same rate over the entire period?

7 days
14 days
21 days
28 days

Answer 1

21 days

Explanation:

if you do 1/7 of the task in 3 days, you must do 7/7 of the task to finish

to make 1/7 7/7 you must multiply it by 7

so you set the equation up like this

3 * 7

and you get 21 as how long she works