Joshua likes to read. He read 6 books when he was 6 years old. Every year he doubled the number of books he read the previous year. How many total books did he read between the ages of 6 and 10?
6 years old:6 books 7 years old: 12 books 8 years old: 24 books 9 years old: 48 books 10 years old: 96 books 6+12+24+48+96=186 books. As a result, he reads total 186 books. Hope it help!