Question: Natalie's sister had 8 small diaries in her locker. Last summer she bought double the number of diaries she had and then lost 1/4 of what she had. How many diaries does Natalie's sister have now?
Answer: Step-by-step reasoning process: Natalie's sister bought 2 * 8 = 16 diaries. So she then had 16 + 8 = 24 diaries. Afterwards, she loses 1 / 4 * 24 = 6 diaries. So, Natalie's sister now has 24 - 6 = 18 diaries.
So the answer is 18.

Question: Alexis is applying for a new job and bought a new set of business clothes to wear to the interview. She went to a department store with a budget of $200 and spent $30 on a button-up shirt, $46 on suit pants, $38 on a suit coat, $11 on socks, and $18 on a belt. She also purchased a pair of shoes, but lost the receipt for them. She has $16 left from her budget. How much did Alexis pay for the shoes?
Answer: Step-by-step reasoning process: Let S be the amount Alexis paid for the shoes. She spent S + 30 + 46 + 38 + 11 + 18 = S + 143. She used all but $16 of her budget, so S + 143 = 200 - 16 = 184. Thus, Alexis paid S = 184 - 143 = $41 for the shoes.
So the answer is 41.

Question: Miss Molly surveyed her class of 30 students about their favorite color. Half of the class answered green, one-third of the girls answered pink, and the rest of the class answered yellow. If there are 18 girls in the class, how many students like yellow best?
Answer: Step-by-step reasoning process: 30 / 2 = 15 students answered green. 18 / 3 = 6 girls answered pink. So, 15 + 6 = 21 students answered either green or pink. Therefore, 30 - 21 = 9 answered yellow.
So the answer is 9.

Question: Tony has to run several errands in a day. He needs to drive 10 miles to get groceries, 15 miles to get a haircut and 5 miles to go to a doctor's appointment. How many miles will Tony have driven when he is halfway through driving around for his errands?
Answer:
Step-by-step reasoning process: First, we need to find the total number of miles Tony will be driving by adding 10 + 15 + 5 = 30 miles in total. To determine the halfway point, we simply divide the total number of miles by 2, performing 30 / 2 = 15 miles driven when Tony is halfway done.
So the answer is 15.