Janet has 120 dollars, and saves 20 dollars a week. She wants $500 in all.
First, subtract 120 from 500
500 - 120 = 380
Next, divide the number gotten by 20.
380/20 = 19
She needs to save 20$ for 19 weeks.
There are 7 days in 1 week.
19 x 7 = 133
133 days is your answer
Hope this helps