Q: On Saturdays and Sundays, Suzanne makes french toast for the family. She and her husband each have 1 whole slice and her daughters split 1 slice. She uses a thick sliced bread that comes 12 slices per loaf. Over 52 weeks, how many loaves of bread will she need to make french toast?
A: She and her husband have 1 slice each and her children split 1 slice so that's 1 + 1 + .5 + .5 = 3 slices. She makes 3 pieces of french toast on Saturday and Sunday for a total of 3 * 2 = 6 slices per weekend. If she uses 6 slices per weekend then over 52 weeks she will have used 6 * 52 = 312 slices. She gets 12 slices per loaf and she needs 312 slices so she needs 312 / 12 = 26 loaves. The answer is 26.

Q: Marly has ten $20 bills, eight $10 bills, and four $5 bills. If she wants to change her bills to $100 bills, how many pieces of $100 bills will she have?
A: The ten $20 bills amount to $20 x 10 = $200. The eight $10 bills amount to $10 x 8 = $80. The four $5 bills amount to $5 x 4 = $20. So, Marly has a total of $200 + $80 + $20 = $300. Therefore, she will have $300 / $100 = 3 pieces of $100 bills. The answer is 3.

Q: Marcos has to get across a 5 mile lake in his speedboat in 10 minutes so he can make it to work on time. How fast does he need to go in miles per hour to make it?
A:
10 minutes for 5 miles means 10 minutes / 5 miles = 2 minutes / mile. 1 hour is 60 minutes so 60 minutes / hour / 2 minutes / mile = 30 miles / hour. The answer is 30.