Ricky has 40 roses. His little sister steals 4 roses. If he wants to give away the rest of the roses in equal portions to 9 different people, how many roses will each person get? Give the rationale and then the answer.
Let's think step by step. After Ricky’s little sister takes 4 roses, Ricky has 40 - 4 = 36 roses. Ricky can give each person 36 / 9 = 4 roses.. The answer is: 4.

Chester must deliver ten bales of hay to Farmer Brown. Farmer Brown wants Chester to supply better quality hay and double the delivery of bales of hay. If the previous hay cost $15 per bale, and the better quality one cost $18 per bale, how much more money will Farmer Brown need to meet his own new requirements? Give the rationale and then the answer.
Let's think step by step. The hay previously cost $15 per bale so 10 bales would cost $15 * 10 = $150. Double 10 bales is 10 * 2 = 20 bales. Better quality hay cost $18 per bale so 20 bales would cost $18 * 20 = $360. Farmer Brown would need $360 - $150 = $210 more.. The answer is: 210.

Madeline wants to drink 100 ounces of water in a day. Her water bottle can hold 12 ounces of water. She refills her water bottle 7 times. How much more water does she need to drink? Give the rationale and then the answer.
Let's think step by step. She has already had 12 * 7 = 84 ounces of water. She needs to drink 100 - 84 = 16 more ounces to make it to 100 ounces.. The answer is: 16.