Answer:
x=6
Step-by-step explanation:
since y=5x/2-7, and y=4x/3
so 5x/2-7=4x/3
5x/2-4x/3= 7
15x-8x/6=7
7x/6=7
x= 7*6/7= 6
a + z + l = 720
l = 2z = 2a - 80
4z + 40 = 720
4z = 680
z = 170
l = 340
a = 210
Given that and , we have
and
37.5 hours a week divided by the 5 days =7.5 hours a day
$15.75 per hour multiplied by 7.5 hours per day=$118.125