Question

Priya starts with $50 in her bank account. She then deposits $20 each week for 12 weeks. How many weeks does it take her to have $250 in her bank account?

Answer 1

To resolve the problem is useful to conform an equation with the information provided. We know that the initial amount is $50, to this quantity we are going to sum $20x where x represents weeks. Therefore, the equation obtained is

$50+20x=250$

Doing the corresponding calculations, we get

$\begin{gathered} 20x=250-50 \\ x=\frac{200}{20}=10 \end{gathered}$

Thus, Priya needs 20 weeks to have $250 in her bank account.