Use the table to answer the question.
INPUT
A 750
B1,000
C 450
D 3,000
OUTPUT
A 1,500
B 4,000
C 600
D 5,000
Which machine has the highest efficiency?
(1 point)
• machine B
• machine A
• machine C
• machine D
To calculate efficiency, we can find the ratio between output and input for each machine:
Efficiency = Output / Input
For machine A:
Efficiency = 1,500 / 750 = 2
For machine B:
Efficiency = 4,000 / 1,000 = 4
For machine C:
Efficiency = 600 / 450 = 1.33
For machine D:
Efficiency = 5,000 / 3,000 = 1.67
Based on these calculations, the machine with the highest efficiency is machine B.