Samantha sleeps an average of 8 hours a night. Her baby sister sleeps 2.5 times as much as Samantha does. Because her father is so tired from watching the baby, for every hour the baby sleeps, he sleeps 30 minutes. How many hours does her father sleep in a week?
Let's think: The baby sleeps 20 hours a day because 2.5 x 8 = 20. The baby sleeps 2 times as much as the father because 60 / 30 = 2. The father sleeps 10 hours a night because 20 / 2 = 10. The father sleeps for 70 hours a week because 7 x 10 = 70.. The answer is: 70.

Ragnar is a woodchopper. He can get 3 blocks of wood for every tree he cuts. If Ragnar chops 2 trees every day, how many blocks of woods does he get after 5 days?
Let's think: Ragnar gets 3 x 2 = 6 blocks of wood every day. Therefore, the total number of blocks of woods he gets after 5 days is 6 x 5 = 30.. The answer is: 30.

If there are four times as many red crayons as blue crayons in a box, and there are 3 blue crayons. How many crayons total are in the box?
Let's think: Red crayons: 4(3) = 12. Total crayons: 12 + 3 = 15 crayons.. The answer is: 15.

Bryan bought three different bottles of milk. The bottles contain the following volumes of milk: 2 liters, 750 milliliters, 250 milliliters. How many liters of milk did Bryan buy in total?
Let's think:
Bryan bought a total of 750 + 250 = 1000 milliliters of milk from the two smaller bottles. Since 1 liter is equal to 1000 milliliters, then 1000 milliliters is equal to 1000 / 1000 = 1 liter. Therefore, Bryan bought a total of 2 + 1 = 3 liters of milk.. The answer is: 3.