Question

If "A student did a job for $24, and it took him 1 hour longer than he expected, so he earned $4 per hour less than he expected, how long did he expect it would take to do the job" is the question, and the set up is
24 = 24 + ___?<-- what is this?
x x+1

Answer 1

x= time he expected it would take him. So 24/x is his expected hourly rate.
x+1 is the actual time and 24/(x+1) is the actual hourly rate.
So
\[\frac{24}{x}-4=\frac{24}{x+1}\]

Answer 2

Can you solve that?

Answer 3

yeah, thanks!

Answer 4

yw