Aziz's parents moved to America in 1982. The year is 2021 and Aziz just celebrated his 36th birthday. How many years had his parents been living in America before Aziz was born?
Let's think: Aziz was born in the year 2021 - 36 years = 1985. Therefore, Aziz's parents had been living in America for 1985 - 1982 = 3 years.. The answer is: 3.

The bus driver drives an average of 2 hours each day, 5 days a week. From Monday to Wednesday he drove at an average speed of 12 kilometers per hour, and from Thursday to Friday at an average speed of 9 kilometers per hour. How many kilometers did the driver travel during these 5 days?
Let's think: From Monday to Wednesday, there are 3 * 2 = 6 hours of work. During this time the driver drove 6 * 12 = 72 kilometers. On Thursday and Friday, there are 2 * 2 = 4 hours of work in total. During this time the driver drove 4 * 9 = 36 kilometers. So in total, the driver traveled 72 + 36 = 108 kilometers during these five days.. The answer is: 108.

Marco loves trading cards. He has a total of 500 cards on hand, and a fourth of them are duplicates. Marco decides to trade one-fifth of these duplicates for completely new cards to his friend Josh. How many new cards did Marco get?
Let's think: Marco has 500 * 0.25 = 125 duplicate trading cards. He wants to trade off 125 * 0.2 = 25 cards for new ones.. The answer is: 25.

Merry is taking care of 10 lambs. Her brother takes care of 3 more lambs than Merry. How many lambs do Merry and her brother have?
Let's think:
Merry's brother takes care of 10 + 3 = 13 lambs. So, together Merry and her brother have 10 + 13 = 23 lambs.. The answer is: 23.