[Question]Brittany is older than Rebecca by 3 years, who is 25. Brittany goes on a 4-year vacation. How old is Brittany when she returns from her vacation?
[Answer]Brittany is 25 + 3 = 28 years old. Brittany is 28 + 4 = 32 years when she returns from her vacation. The answer is 32.

[Question]Bob has to hire someone to fix his garden. A storm destroyed all 20 of his rose bushes. He decides to replant all the rose bushes. Each rose bush costs $150. He also needs to pay a gardener $30 an hour, 5 hours each day for 4 days. The final expense is 100 cubic feet of soil sold for $5 per cubic foot. How much did the entire gardening project cost?
[Answer]The roses cost 150 * 20 = $3000. The gardener works 4 * 5 = 20 hours. So the gardener charges 30 * 20 = $600. The soil added another 5 * 100 = $500. So in total the cost was 3000 + 600 + 500 = $4100. The answer is 4100.

[Question]Wilfred eats 4 carrots on Tuesday and 6 carrots on Wednesday. If Wilfred wants to eat a total of 15 carrots from Tuesday to Thursday, how many carrots does Wilfred need to eat on Thursday?
[Answer]Across Tuesday and Wednesday, Wilfred eats 4 + 6 = 10 carrots. On Thursday, Wilfred needs to eat 15 - 10 = 5 carrots. The answer is 5.

[Question]Flora has been experiencing frequent fractures. Dr. Juan has asked her to strengthen her bones by drinking 105 gallons of milk within 3 weeks. Flora thinks that drinking 3 gallons of milk daily will be enough, but her brother says she'll still need to drink more. To fulfill Dr. Juan's requirement, how many more gallons must Flora drink daily?
[Answer]
3 weeks translate to 3 * 7 days = 21 days. To meet Dr. Juan's recommendation would mean drinking 105 / 21 = 5 gallons daily. This means that Flora must drink 5 - 3 = 2 more gallons daily. The answer is 2.