Hello, Amy!

This could be solved as an Arithmetic Sequence, but we'll do it the easy way . . .A boy sold 100 tickets in five days.

Each day he sold 6 more tickets than he had sold the previous day.

How many tickets did he sell on the first day?

Let = number tickets he sold the first day.

Then: .

He sold a total of: . tickets.

We are told that he sold 100 tickets.

There is our equation! . . .

. . and we have: .

Therefore, he sold8tickets the first day.