Question 935434
Ben tutors in the math lab. He gets paid $8 per hour for the first 15 hour and $10 per hour for each hour after that. She made $150 one week. How many hour did he work?

let let he work for Y hours additions  and $8 per hours for 15 hours 
8x15+10Y=150
120+10y=150
10y=150-120
10Y=30
y=30/10=3 hours 
Answer  3 hours