# Julio bought tables and chairs for his restaurant. He brought 16 total items and spent $1800. Each table cost$150 and each chair cost $50. How many tables and chairs did he buy? ##### 1 Answer May 19, 2017 #### Answer: $10$tables and $6$chairs. #### Explanation: Let $t$equal the number of tables and $c$equal the number of chairs. Write down two equations to find the two unknowns, $t$and $c$. $150 t + 50 c = 1800$$t + c = 16$Using the substitution method: $t = 16 - c$So: $150 \left(16 - c\right) + 50 c = 1800$$2400 - 150 c + 50 c = 1800$$- 100 c + 2400 = 1800$$- 100 c = - 600$$c = 6$Substitute $c$back into either of the original equations to find $t$: $t = 16 - c$$t = 16 - 6$$t = 10\$

You could also use the elimination method to solve this problem.