Q: In the cafeteria, Athena wants to buy snacks for her friends. She bought 3 sandwiches at $3 each and 2 fruit drinks at $2.5 each. How much did she spend in all?
A: Athena spent 3 x $3 = $9 on sandwiches. She spent 2 x $2.5 = $5 on fruits drinks. Therefore, Athena spent $9 + $5 = $14 in all. The answer is 14.

Q: In Henry's collection of music CDs, he has 3 more country CDs than rock CDs but twice as many rock CDs as classical CDs. If he has 23 country CDs, how many classical CDs make up his collection?
A: Henry has 23 - 3 = 20 rock CDs. Henry has 20 / 2 = 10 classical CDs. The answer is 10.

Q: Nadia was sent to the flower shop to buy 20 roses and 3/4 times as many Lillies as roses. If roses cost $5 each and lilies cost twice as much each, calculate the total amount of money Nadia used to buy the flowers.
A:
The total cost for roses is 20 * 5 = $100. Nadia bought 3 / 4 * 20 = 15 lilies. Each lily costs 5 * 2 = $10. She used 10 * 15 = $150 in total to buy lilies. To buy all the flowers, Nadia used 150 + 100 = $250. The answer is 250.