Ari wants to save up to buy a new computer, which costs $1,100. She received $500
for her graduation and decides to invest her money in a fund where she can earn
interest on her money. Use the simple interest formula I = prt.
Plan A Plan B
6.5% interest on the original balance
each month for 12 months
6.5% interest on the balance in the
account each month
1. How much money will Ari have after 12 months using Plan A?
2. How much money will Ari have after 12 months using Plan B?
3. Which investment fund should Ari use? Explain.
4. After 12 months Ari still does not have enough to buy the computer. How many
more months will it take her to reach $1,100 using either plan?
