Question: Bill decides to bring donuts to work for a meeting that day. He buys a box of donuts that has 50 in total in them. He eats 2 on the ride in because he's hungry. When he gets to the office, the secretary takes another 4 out of the box when he's not looking. Lastly, right before the meeting Bill sets the box down on his desk and leaves the office to take a phone call. While Bill's away, his coworkers steal half the remaining donuts. Bill comes back and brings the box into his meeting. How many donuts are left in the box?
Answer with step-by-step thinking: Bill eats 2 donuts out of a box of 50 for 50 - 2 = 48 donuts remaining. The secretary takes 4 more donuts out of the box, leaving 44 donuts remaining. Bills coworkers take half of the remaining donuts, leaving 44 / 2 = 22 donuts remaining.
So the answer is 22.


Question: Viggo spent $80 on a shirt. He paid the shirt using $20 and $10 bills. If she gave the clerk one more $20 bill than $10 bills, how many $10 bills did he give?
Answer with step-by-step thinking: Let x be the number of $10 bills. So, there are (x + 1) $20 bills. Adding the $10 and $20 bills should sum up to $80 so the equation is 10x + 20(x + 1) = 80. Then, distribute 20 to x + 1 so it becomes 10x + 20x + 20 = 80. Combining the like terms on the left side gives 30x + 20 = 80. Then transfer 20 to the right side of the equation, so it becomes 30x = 60. To solve for x, we have 60 / 30 = 2. Therefore, there are 2 $10 bills.
So the answer is 2.


Question: Mr. Johnson has a prescription with enough pills for 30 days. After four-fifths of the days, he has 12 pills left. How many pills is Mr. Johnson supposed to take a day if he takes the same dose daily?
Answer with step-by-step thinking:
Mr. Johnson has been taking the pills for 30 * 4 / 5 = 24 days. He has 30 - 24 = 6 days left to finish the pills. Thus, Mr. Johnson is supposed to take 12 / 6 = 2 pills a day.
So the answer is 2.