Question

the entry fee at a small fair is $1.50 for children and $4.00 for adults . on a certain day 1900 people enter the fair and $4402.50 is collected how many children went to the fair?

Answer 1

150x + 400(1900-x) = 440250

150x + 760000 - 400x = 440250

250x = 319750

x = 1279

There were 1,279 children.