Answer:
28
Step-by-step explanation:
x=blue
y=white
x+y=40
30x+20y=920
30(x+y=40) ; 30x+30y=1200___[1]
30x+20y=920 ; 30x+20y=920___[2]
[1]-[2] : 30x+30y-30x-20y=1200-920
10y=280
y=28
painter buys 28 white gallons
To find the unit rate, we need to divide 6 by 51.
51/6 = 8.50
Kevin earns $8.50 per hour
Answer:
15 pizzas
Step-by-step explanation:
1 pizza serves 4 students
60 students divided by 4 students (which is 1 pizza)
60/4=15
Answer: a $5 bill
Step-by-step explanation: add everything up together the pens add twice
Answer:
y = 2x - 8
Step-by-step explanation: