Victoria had $500. She went to the market and bought 2 packets of rice each at $20, 3 packets of wheat flour each at $25, and 1 soda at $150. What was her remaining balance? Give the rationale and then the answer.
Let's think step by step. In total, she spent 2 * $20 + 3 * $25 + $150 = $265. Thus her remaining balance is $500 - $265 = $235.. The answer is: 235.

A group of researchers are studying a colony of penguins. Their results show that the size doubled in the first year they watched the colony, then tripled in the next year. This year, however, harsh conditions meant the colony only gained 129 penguins. The colony has 1077 penguins in it now. Each penguin eats one and a half fish every day. How many fish did the whole colony catch per day to eat at the beginning of the first year? Give the rationale and then the answer.
Let's think step by step. The colony had 1077 - 129 = 948 penguins in it at the beginning of this year. At the beginning of the second year, the colony had 948 / 3 = 316 penguins in it. At the beginning of the first year, it had 316 / 2 = 158 penguins in it. Thus, at the beginning of the first year, the penguin colony was catching 158 * 1 1 / 2 = 237 fish per day.. The answer is: 237.

Jordan picked 54 mangoes from his tree. One-third of the mangoes were ripe while the other two-thirds were not yet ripe. Jordan kept 16 unripe mangoes and gave the remainder to his sister who pickled them in glass jars. If it takes 4 mangoes to fill a jar, how many jars of pickled mangoes can Jordan's sister make? Give the rationale and then the answer.
Let's think step by step. Jordan picked 54 / 3 = 18 ripe mangoes. He picked 54 - 18 = 36 unripe mangoes. Jordan gave 36 - 16 = 20 unripe mangoes to his sister. Jordan's sister can make 20 / 4 = 5 jars of pickled mangoes.. The answer is: 5.