[Question]Mr. and Mrs. McPherson have to renew their rent by the end of the year. They agreed that Mrs. McPherson would raise 30% of the money. If their rent is $1200 per year, how much does Mr. McPherson need to raise to complete the rent?
[Answer]30% of $1200 is (30 / 100) * $1200 = $360. Mrs. McPherson will pay $360 leaving $1200 - $360 = $840 which Mr. McPherson will have to raise. The answer is 840.

[Question]Tara has a shoebox that is 4 inches tall and 6 inches wide. She puts a square block inside that is 4 inches per side. How many square inches of the box are left uncovered?
[Answer]The shoebox is 24 square inches because 4 x 6 = 24. The block is 16 square inches because 4 x 4 = 16. There are 8 square inches uncovered because 24 - 16 = 8. The answer is 8.

[Question]Eddy’s spider plant produces 2 baby plants 2 times a year. After 4 years, how many baby plants will the mother plant have produced?
[Answer]The mother plant produces 2 baby plants 2 times a year so it produces 2 * 2 = 4 plants a year. It produces 4 plants a year so after 4 years it will produce 4 * 4 = 16 baby plants. The answer is 16.

[Question]Michael has $42. Michael gives away half the money to his brother. His brother then buys 3 dollars worth of candy. If his brother has $35 left, how much money, in dollars, did his brother have at first?
[Answer]
Michael gives away 42 / 2 = 21 dollars. Before buying candy, his brother has 35 + 3 = 38 dollars. His brother had 38 - 21 = 17 dollars at first. The answer is 17.