Q: A desert has 3/5 fewer palm trees than a nearby forest, which has 5000 palm trees. How many palm trees are there in both the desert and the forest combined?
A: The desert has 3 / 5 fewer palm trees than the forest, and since the forest has 5000 palm trees, the desert has 3 / 5 * 5000 = 3000 fewer palm trees. The total number of palm trees in the desert is 5000 - 3000 = 2000. Together, the desert and the forest have a total of 5000 + 2000 = 7000 palm trees. The answer is 7000.
Question: Thomas has 25 drawings to display. 14 of the drawings were made using colored pencils. 7 of the drawings were made using blending markers. The rest of the drawings were made with charcoal. How many are charcoal drawings?
Answer: Thomas made 14 + 7 = 21 colored pencil and blending marker drawings. Thomas made 25 total drawings – 21 colored pencil and blending marker drawings = 4 charcoal drawings. The answer is 4.
[Question]12 archeology students and 4 teachers went on a field trip to a dinosaur museum. Student tickets cost $1 each, and adult tickets cost $3 each. How much did the museum tickets cost in all?
[Answer]The cost of the 12 student tickets is 12 * $1 = $12. The cost of the 4 teacher tickets is 4 * $3 = $12. Adding the cost of the student and teacher tickets, the museum tickets cost $12 + $12 = $24 in total. The answer is 24.
Q: Eliana walked 200 steps for her morning exercise, did some press-ups, then added some 300 more steps to her count for the first day. The next day, she walked twice the number of steps she walked on the first day. And on the third day, Eliana walked an additional 100 steps. What's the total number of steps Eliana walked during these three days?
A: On the first day, she walks 200 + 300 = 500 steps. The next day she walks twice the steps, which is 2 * 500 = 1000. The total number of steps after the two days are 1000 + 500 = 1500. On the third day, she walks an additional 100 steps, bringing the three - day total to 1500 + 100 = 1600 steps. The answer is 1600.
Question: Skyler is a composer. He wrote 25 hit songs that made it on the top 10 charts; ten more songs that made it on the top 100 charts than the hit songs; 5 fewer songs than the hit songs that were never released. How many songs did Skyler write in all?
Answer: Skyler wrote 25 + 10 = 35 songs that made it on the top 100. He wrote 25 - 5 = 20 songs that were never released. So, Skyler wrote a total of 25 + 35 + 20 = 80 songs. The answer is 80.
Q: Mark hires a singer for 3 hours at $15 an hour. He then tips the singer 20%. How much did he pay?
A:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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The cost was 15 * 3 = $45. So the tip was 45 * .2 = $9. So in total, he paid 45 + 9 = $54. The answer is 54.