Q: Lena is making a collage with pictures of all her closest friends and newspaper clippings that are about their interests. She has found three clippings for each friend's pictures. It takes her six drops of glue to stick down each clipping. Lena has already glued her seven closest friends' pictures. How many drops of glue will she need for the newspaper clippings for her collage?
A: Lena has 3 clippings per friend, so she has 3 * 7 = 21 clippings to glue. She needs 6 drops of glue per clipping, so she will need 6 * 21 = 126 drops of glue. The answer is 126.

Q: Maria buys a large bar of French soap that lasts her for 2 months. She spends $8.00 per bar of soap. If she wants to stock up for the entire year, how much will she spend on soap?
A: 1 bar of soap will last for 2 months and there are 12 months in 1 year so she needs 12 / 2 = 6 bars of soap. Each bar of soap is $8.00 and she needs 6 bars so that's a total of 8 * 6 = $48.00. The answer is 48.

Q: A bookseller sells 15 books in January, 16 in February and a certain number of books in March. If the average number of books he sold per month across all three months is 16, how many books did he sell in March?
A:
He sold an average of 16 books per month across all 3 months so he must have sold a total of 3 * 16 = 48 books in those 3 months. He sold 15 + 16 = 31 in January and February. He must have sold 48 - 31 = 17 books in March. The answer is 17.