Question

Use the table to answer the question.

Output and Input Work of Different Machines
Machine Output Work (J) Input Work (J)
A 750 1,500
B 1,000 4,000
C 450 600
D 3,000 5,000
Which machine has the highest efficiency?

(1 point)

machine C

machine A

machine D

machine B

Answer 1

Efficiency = output ÷ input.

A: 750/1500 = 0.50 (50%)
B: 1000/4000 = 0.25 (25%)
C: 450/600 = 0.75 (75%)
D: 3000/5000 = 0.60 (60%)

Machine C has the highest efficiency.