[Question]: Emma bought 3 dozens of macarons in addition to her 10 pieces of macarons for a party. If 15 pieces of macarons are left over, how many pieces of macarons were eaten?
[Answer]: Three dozens of macarons are equal to 3 x 12 = 36 pieces of macarons. So Emma has a total of 36 + 10 = 46 pieces of macarons for the party. Therefore, 46 - 15 = 31 pieces of macarons were eaten.
So the answer is 31.

[Question]: Mr. Wells has a garden of flowers with 50 rows. If each row has 400 flowers and Mr. Wells cuts 60% of the flowers, how many flowers are remaining in the garden?
[Answer]: If there are 50 rows of flowers with 400 flowers per row, there are 50 * 400 = 20000 flowers in the garden,. Mr. Wells cuts flowers from 60% of the flowers, which is 60 / 100 * 20000 = 12000 flowers. The total number of flowers remaining in the garden is 20000 - 12000 = 8000.
So the answer is 8000.

[Question]: The dinner bill for 6 friends came to $150. Silas said he would pay for half of the bill and the remaining friends could split the rest of the bill and leave a 10% tip for the whole meal. How many dollars will one of the friends pay?
[Answer]:
Silas paid half = 150 / 2 = 75. Remaining bill paid by 5 friends = 75 + 10% of 150 = 75 + 15 = 90. Each person will pay 1 / 5 which is 90 / 5 = 18. Each friend will pay $18.
So the answer is 18.