Q: A cup of dog food weighs 1/4 of a pound. If Mike has 2 dogs that each eat 6 cups of dog food twice a day how many 20 pound bags of dog food does he need to buy a month?
A: Each dog eats 6 * 2 = 12 cups of food a day. His two dogs eat 12 * 2 = 24 cups a day. Thus they eat 24 / 4 = 6 pounds a day. So they eat 6 * 30 = 180 pounds a month. So he needs to buy 180 / 20 = 9 bags of food. The answer is 9.

Q: Graeme is weighing cookies to see how many he can fit in his box. His box can only hold 40 pounds of cookies. If each cookie weighs 2 ounces, how many cookies can he fit in the box?
A: First find how many cookies are in a pound. 16 ounces per pound / 2 ounces / cookie = 8 cookies per pound. The box can hold 40 pounds, so 40 pounds * 8 cookies per pound = 320 cookies. The answer is 320.

Q: In 2021, Wayne is 37 years old. His brother Peter is 3 years older than him and their sister Julia is 2 years older than Peter. What year was Julia born in?
A:
Peter is 3 years older than Wayne who is 37 so Peter is 37 + 3 = 40 years old. Julia is 2 years older than Peter who is 40 so Julia is 2 + 40 = 42 years old. It's 2021 and Julia is 42 years old so she was born in 2021 - 42 = 1979. The answer is 1979.