MCQOPTIONS
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| 1. |
The number of neon lamps having a life of 600 hours or more but less than 800 hours is what percentage of the total number of neon lamps having a life of 800 hours or more? |
| A. | 68.75 |
| B. | 66.67 |
| C. | 69.25 |
| D. | 67.5 |
| Answer» B. 66.67 | |