Ben's hockey team is 60% boys and the rest are girls. Half the girls are juniors and the other half are seniors. If the team has 50 players, how many junior girls are there? Give the rationale and then the answer.
Let's think step by step. The team is 40% girls because 100 - 60 = 40. The team has 20 girls because 50 x .4 = 20. The team has 10 junior girls because 20 / 2 = 10.. The answer is: 10.

Legoland has 5 kangaroos for each koala. If Legoland has 180 kangaroos, how many koalas and kangaroos are there altogether? Give the rationale and then the answer.
Let's think step by step. For every 5 kangaroos, there is one koala, meaning for the 180 kangaroos, there are 180 / 5 = 36 koalas. Altogether, there are 36 + 180 = 216 koalas and kangaroos.. The answer is: 216.

Linda is repainting her bedroom. The wall area is 600 sq. ft. If a gallon of paint can cover 400 sq. ft., how many gallon cans of paint will Linda have to buy if she wants to do two coats? Give the rationale and then the answer.
Let's think step by step. Linda wants to do two coats, so the total area she will be painting is 2 coats * 600 sq. ft. / coat = 1200 sq. ft. A gallon of paint will cover 400 sq. ft., so Linda will need 1200 sq. ft. / 400 sq. ft. per can = 3 cans of paint.. The answer is: 3.