[Question]: On national lipstick day, half of the students who attended class wore colored lipstick. Of those students who wore lipstick, one quarter wore red lipstick. There were one-fifth as many students wearing blue lipstick as were wearing red lipstick. If 200 students attended school that day, how many wore blue lipstick?
[Answer]: Of 200 students who attended class, half wore colored lipstick, or 200 / 2 = 100 students wore colored lipstick. Of those students who wore lipstick, one quarter wore red lipstick, or 100 / 4 = 25 students wore red lipstick. Since there were one - fifth as many students wearing blue lipstick as were wearing red lipstick, then 25 / 5 = 5 students wore blue lipstick.
So the answer is 5.

[Question]: Lowry sells bonsai. A small bonsai costs $30 and a big bonsai costs $20. If he sold 3 small bonsai and 5 big bonsai, how much did he earn?
[Answer]: Lowry earns $30 x 3 = $90 from selling 3 small bonsai. He earned $20 x 5 = $100 from selling 5 big bonsai. Therefore, the total amount he earned is $100 + $90 = $190.
So the answer is 190.

[Question]: John ends up damaging his hearing aids. He needs to replace both of them. They cost $2500 each. Insurance covers 80% of the cost. How much does he personally have to pay?
[Answer]:
The cost of the hearing aids is $2500 * 2 = $5000. So insurance covers $5000 * .8 = $4000. That means it cost him $5000 - $4000 = $1000.
So the answer is 1000.