Question: Tim is 5 years old. His cousin, Rommel, is thrice as old as he is. His other cousin, Jenny, is 2 years older than Rommel. How many years younger is Tim than Jenny?
Answer with step-by-step thinking: Rommel is 5 x 3 = 15 years old. Jenny is 15 + 2 = 17 years old. So, Tim is 17 - 5 = 12 years younger than Jenny.
So the answer is 12.

Question: A farm has 5 less than 9 times the amount of hens as roosters. If there are 75 total chickens, how many hens are there?
Answer with step-by-step thinking: Let x represent the number of roosters. Number of hens:9x - 5. Total:9x - 5 + x = 75. 10x - 5 = 75. 10x = 80. x = 8. Number of hens: 9(8) - 5 = 67.
So the answer is 67.

Question: Tanika is selling boxes of crackers for her scout troop's fund-raiser. On Saturday, she sold 60 boxes. On Sunday, she sold 50% more than on Saturday. How many boxes did she sell, in total, over the two days?
Answer with step-by-step thinking:
She sold 60 * 1.50 = 90 boxes on Sunday. The total is 60 + 90 = 150 boxes.
So the answer is 150.