Question

The sum of three consecutive numbers is 57. What is the largest of these numbers?

Answer 1

18
19
20
21

Answer 2

The trick to solving these is to set it up in this clever way. You know that 4 and 5 are consecutive numbers, that's obvious cause 5 is just right after 4. A mathematical way of saying that is that 5=4+1. Let's think about 8, 9, and 10. They're all consecutive too, so we can write that as 8, 8+1, and 8+2.

If we didn't know what the numbers were though, we can say three consecutive numbers are n, n+1, and n+2.

Answer 3

ok

Answer 4

is the answer 19