Carter can read half as many pages as Lucy in 1 hour. Lucy can read 20 more pages than Oliver in 1 hour. Oliver can read 40 pages. How many pages can Carter read in 1 hour? Let's answer step by step:
Lucy can read 20 more pages than Oliver who can read 40 pages so Lucy can read 40 + 20 = 60 pages. Carter can read half as many pages as Lucy who can read 60 pages so he can read 60 / 2 = 30 pages in 1 hour. The answer: 30.