janet has $120. if she saves $20 per week, in how many day will she have $500?

Question

I want to know how do you do the problem, do you add or subtract/mutiply or divide I am so confused

 

Answer 1

consider the situation; janet has $120 and she wants to accumulate more, i.e. to ADD $20 per week for some number of weeks, until the amount has grown by $380, so that the total is then $500.

 

you divide $380 by $20 per week to get 19 weeks of steady savings growth.