Question: Rikki is writing and selling poetry. He sells his poems for $.01 a word. He can write 25 words of poetry in 5 minutes. If he has 2 hours to write poetry, how much can he expect to earn?
Answer with step-by-step thinking: He will write for 120 hours because 2 x 60 = 120. He will write for 24 units of five minutes each because 120 / 5 = 24. He can write 600 words because 24 x 25 = 600. He can earn $6 because 600 x .01 = 6.
So the answer is 6.


Question: Nedy can eat 8 packs of crackers from Monday to Thursday. If Nedy ate twice the amount on Friday, how many crackers did Nedy eat in all?
Answer with step-by-step thinking: Nedy can eat 8 x 4 = 32 crackers from Monday to Thursday. He can eat 8 x 2 = 16 packs of crackers on Friday. Therefore, Nedy ate 32 + 16 = 48 crackers in all.
So the answer is 48.


Question: Don buys recyclable bottles in a small town. Shop A normally sells him 150 bottles, shop B sells him 180 bottles and Shop C sells him the rest. How many bottles does Don buy from Shop C if he is capable of buying only 550 bottles?
Answer with step-by-step thinking:
Between Shop A and Shop B he buys 150 bottles + 180 bottles = 330 bottles. Thus he can buy 550 bottles - 330 bottles = 220 bottles from shop C.
So the answer is 220.