Answer:
Use the value for the variable to solve for the other unknowns. Substitute the value for the variable into the expression for the number of seats on the middle level. Substitute the value for the variable into the expression for the number of seats on the lower level.
Answer:
150
Step-by-step explanation:
30/100 times 500/1 = 150
33/12 = 2.75 per can
2.75 * 7 = 19.25......so its 19.25 for 7 cans
6z-7z/5=3
(30z-7z)/5=3
30z-7z=15
23z=15
z=15/23
