Question

10.

Amelia tries to guess how many people are at a concert, but she guesses 400 too many. Ryan
guesses 250 too few. The average of their guesses is 3 575. Solve for x, the exact number of
people at the concert.

Answer 1

....x= the number of people

Amelia: x-400

Ryan: x+250

the average of their guesses = 3575

(x-400+x+250)/2 = 3575

(2x-150)/2 = 3575

2x-150 =3575*2

2x = 3575*2+150

x=3650

there were 3650 people