Question

Amy, Bart, Connor, and Doug raced to the oak tree. It took Amy 16 seconds to get there. It took Bart 4 seconds less than Amy. Connor 3 seconds less than Bart. Doug was the slowest. It took him twice as long as Connor to get to the tree. How many seconds did it take Doug to reach the tree?

Answer 1

a=16
b = 16-4 = 12
and so on

Answer 2

16 - 4 = 12 Bart

12 - 3 = 9 Connor

2 * 9 = ?