20 bicycles each of 2 wheels
So 20 x 2 = 40 wheels
10 cars each of 4 wheels
So 10 x 4 = 40 wheels
Total = 40 + 40
= 80 wheels
Answer:
0.80
Step-by-step explanation:
Khan academy
6x + 3y = 79.5
3x + 2y = 41 y = -3/2x + 41/2 y = -1.5x + 20.5
6x + 3(-1.5x + 20.5) = 79.5
6x - 4.5x + 61.5 = 79.5
1.5x + 61.5 = 79.5
1.5x = 18
x = 12
Each shirt costs $12.
Now insert that number into the x to find the cost of each tie.
3(12) + 2y = 41
36 + 2y = 41
2y = 5
y = 2.5
Each tie costs $2.50.
