Question

which machine has the highest efficiency? A 750 1500 B 1000 4000 C 450 600 D 3000 5000

Answer 1

To determine which machine has the highest efficiency, we need to calculate the efficiency for each machine option provided. Efficiency can be calculated using the formula:

\[
\text{Efficiency} = \frac{\text{Output}}{\text{Input}} \times 100\%
\]

For each option, we will compute the efficiency:

### A: 750 / 1500
\[
\text{Efficiency}_A = \frac{750}{1500} \times 100\% = 50\%
\]

### B: 1000 / 4000
\[
\text{Efficiency}_B = \frac{1000}{4000} \times 100\% = 25\%
\]

### C: 450 / 600
\[
\text{Efficiency}_C = \frac{450}{600} \times 100\% = 75\%
\]

### D: 3000 / 5000
\[
\text{Efficiency}_D = \frac{3000}{5000} \times 100\% = 60\%
\]

Comparing the efficiencies:
- Efficiency A: 50%
- Efficiency B: 25%
- Efficiency C: 75%
- Efficiency D: 60%

**The machine with the highest efficiency is Option C (450/600) with an efficiency of 75%.**