Night 1:30 pages. Night 2:2(30) - 2 = 58 pages. Night 3:3 + (30 + 58) = 91 pages. Total:30 + 58 + 91 = 179 pages.
The answer: 179
Reverse engineering the question: Coral reads 30 pages of a book on night 1, and 2 less than twice that on night 2. Night 3 Coral reads 3 more pages than the sum of the first two nights. How many total pages did Coral read in the 3 nights?

The flower shop sold 45 + 20 = 65 daisies on the second day. Twice the number of flowers on the second day is 65 x 2 = 130. So, the flower shop sold 130 - 10 = 120 daisies on the third day. The total daisies sold for 3 days was 45 + 65 + 120 = 230. Therefore, 350 - 230 = 120 daisies were sold on the 4th day.
The answer: 120
Reverse engineering the question: Daisy's Flower Shop sold 45 daisies on its first day. On their second day, they sold 20 more flowers than they did on their first day. On the third day, they sold 10 less than twice the flowers that were sold than on the second day. If the flower shop sold a total of 350 daisies for 4 days, how many daisies were sold on the 4th day?

First find the number of spiral shells Jackson collects: 45 hermit crabs * 3 spiral shells / hermit crab = 135 spiral shells. Then find the number of starfish he collects: 135 spiral shells * 2 starfish / spiral shell = 270 starfish. Then add the number of each animal he collects to find the total number: 135 spiral shells + 270 starfish + 45 hermit crabs = 450 souvenirs.
The answer: 450
Reverse engineering the question: Jackson collects 45 hermit crabs, 3 spiral shells per hermit crab, and 2 starfish per spiral shell. How many souvenirs does he collect total?

Colton gave away 4 stickers * 3 friends = 12 stickers. Colton gave Mandy 2 + 12 stickers = 14 stickers. Colton gave Justin 14 stickers - 10 = 4 stickers. In total, Colton gave away 12 + 14 + 4 stickers = 30 stickers. Colton's number of total stickers at the end is 72 - 30 = 42 stickers.
The answer: 42
Reverse engineering the question:
Colton had 72 dolphin stickers. He gave 4 stickers each to 3 friends. He also gave his friend Mandy 2 more than he gave his three friends total.  And he gave Justin 10 less than Mandy. How many stickers does Colton have left?