Answer this question:Mona bikes 30 miles each week to stay fit. This week, she biked on Monday, Wednesday, and Saturday. On Wednesday, she biked 12 miles. On Saturday, she biked twice as far as on Monday. How many miles did she bike on Monday?
Let M be the number of miles Mona biked on Monday. Thus, Mona biked 2M miles on Saturday. In all, Mona biked M + 2M + 12 = 30 miles. Thus, on Monday and Saturday, she biked M + 2M = 3M = 30 - 12 = 18 miles. Therefore, on Monday, Mona biked M = 18 / 3 = 6 miles.
The answer is 6.

Answer this question:Maurice is getting $2 for every finished task. And for every 10 tasks finished, he receives a $6 bonus. How much money would Maurice make for finishing 30 tasks?
Starting with the bonus, Maurice would receive it 30 / 10 = 3 times. This means the bonus money, would make up to 3 * 6 = $18. Maurice would do 30 tasks, so for all of them, he would receive 30 * 2 = $60. So in total Maurice would make 60 + 18 = $78 for finishing 30 tasks.
The answer is 78.

Answer this question:Dan has two times as many stickers as Tom. Tom has 3 times as many stickers as Bob. If Bob has 12 stickers, how many does Dan have?
Tom has 3 * 12 = 36 stickers. Dan has 2 * 36 = 72 stickers.
The answer is 72.

Answer this question:Jed's family wants to buy 6 different board games. Each board game costs $15 and Jed paid using a $100 bill. If the cashier gave Jed only $5 bills for his change, how many bills did Jed receive?
Jed paid $15 x 6 = $90 for the 6 board games. He has $100 - $90 = $10 change. Therefore, Jed received$ 10 / $5 = 2 $5 bills.
The answer is 2.