Problem 12 of 35alg-012
The rent for an apartment was $800 per month. The rent increased by 10%, and one year later the new rent increased by 5%. What is the monthly rent after both increases?
Try it first
The walkthrough opens once you check an answer.
Solution walkthrough1:33
- There are two increases, one after the other. Each percent is a part of the rent at that moment.
- 10% of $800 is one tenth of it: . The rent becomes dollars.
- The 5% is taken of the new rent, $880, not of $800: .
- Add the second increase: . The rent is now $924 per month.
- Traps: $920 takes 15% of $800, $880 stops after one increase, and $815 adds 10 and 5 as dollars.