SOLUTION: A total of 1,200 teachers attended a mathematics conference. Early bird registration fee is at 2,000 pesos per teacher while regular registration fee costs 2,500 pesos per teacher.

Question 1176894: A total of 1,200 teachers attended a mathematics conference. Early bird registration fee is at 2,000 pesos per teacher while regular registration fee costs 2,500 pesos per teacher.
a. If x is the number of teachers who registered early, express the total fees collected in terms of x.
b. If 2,825,000 pesos were collected, how many of each type registered?
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
is the number of teachers who registered early
let be the number of teachers who registered regularly

.....eq.1
a.
If is the number of teachers who registered early, express the total fees collected in terms of x.

b.
If pesos were collected, how many of each type registered?
..........substitute from eq.1

-> the number of teachers who registered early
go to eq.1
.....eq.1, substitute

-> the number of teachers who registered regularly

the total fees collected from teachers who registered early:
the total fees collected from teachers who registered regularly:

check total:

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