Elsie has a specific amount of wet wipes in a container in the morning. Throughout the day, she refills the container with 10 more wipes after using up 20. By nighttime, she only has 60 wipes left. How many wipes were in the container in the morning? Give the rationale and then the answer.
Let's think step by step. Let w be the number of wet wipes Elsie had in the morning. Throughout the day, she used w - 20 wet wipes. Once that happened, she had to refill the container resulting in w - 20 + 10 = w - 10 wet wipes. By nighttime, she had w - 10 = 60 wipes. So then, w = 60 + 10 = 70. She started with w = 70 wipes.. The answer is: 70.

Ines had $20 in her purse. She bought 3 pounds of peaches, which are $2 per pound at the local farmers’ market. How much did she have left? Give the rationale and then the answer.
Let's think step by step. Ines bought 3 pounds of peaches for 3 peaches * $2 / peach = $6. Ines has $20 - $6 = $14 left.. The answer is: 14.

In Dana's senior high school class there were 200 students. 60% of the students were female, and 50% of the females were brunettes. If 50% of the female brunettes were under 5 feet tall, then how many female brunettes in Dana's high school senior class were under 5 feet tall? Give the rationale and then the answer.
Let's think step by step. In Dana's senior class, the 60% of 200 students is 0.6 * 200 = 120 female students. Fifty percent of the females, or 0.5 * 120 = 60 of the female students were brunettes. If 50% of the female brunettes were under 5 feet tall, then there were 60 * 0.5 = 30 female brunettes under five feet tall in Dana's senior class.. The answer is: 30.