Answer the following question.
Maggie went to Lou's aquarium and saw 100 goldfish in the aquarium. She asked if she could take some home to care for, and she was allowed to catch half of them. While using a catching net, she caught 3/5 of the total number of goldfish she was allowed to take home. How many goldfish does Maggie remain with to catch to get the total number she was allowed to take home?
Step-by-step reasoning process: Maggie was allowed to take half of the goldfish in the aquarium, a total of 1 / 2 * 100 = 50 goldfish. On her first catch, Maggie got 3 / 5 * 50 = 30 goldfish. To reach the number of goldfish she was allowed to take home, Maggie has to catch 50 - 30 = 20 more goldfish.
The answer is 20.

Answer the following question.
Michael has 2 cats and 3 dogs. He needs to pay a friend to watch them, who charges $13 a night per animal. How much does Michael have to pay?
Step-by-step reasoning process: Michael has 5 animals because 2 + 3 = 5. Michael has to pay $65 because 5 x $13 = $65.
The answer is 65.

Answer the following question.
A jar contains 9 blue pens, 21 black pens, and 6 red pens. Four blue pens are removed and then seven black pens are removed. How many pens are left in the jar?
Step-by-step reasoning process: There are 9 - 4 = 5 blue pens left in the jar. There are 21 - 7 = 14 black pens left in the jar. There are 5 + 14 + 6 = 25 pens left in the jar.
The answer is 25.

Answer the following question.
Porter earns $8 per day and works 5 times a week. His manager is asking him to work an extra day that promises him an extra fifty percent on top of his daily rate. How much money will he earn after a month if he renders overtime every week?
Step-by-step reasoning process: Porter's weekly earning is $8x5 = $40. Porter's monthly earning is $40x4 = $160. The extra amount he will earn when he works on his overtime is $8 x 50 / 100 = $4. So the amount he will earn on his overtime is $8 + $4 = $12. Since he will render overtime once every week, the total overtime pay he will earn in a month is $12 x 4 = $48. Therefore the total money he will earn in a week is $160 + $48 = $208.
The answer is 208.