Q. In view of the increasing power cuts, Chowdhury Nathan Singh had provided four diesel generators to his factory. These were imported from Germany, England, Russia and Japan. They began to produce 300, 40, 600, 700 units of electricity per hour, respectively.
Last Friday there was complete power-failure, as a result of which all the four generators were switched on simultaneously at 1 o’clock. After 4 hours the first generator was switched off. The second was switched off 2 hours later. One hour after this the third generator went out of order and could not be re-started.
Two hours after this the electrical supply commenced and the fourth generators had produced 13,700 units of electricity.
From the above can you tell which generator ran for how many hours and how many units of electricity did each produce?
A.
| Generator producing country | Hours in use | Electricity produced |
| Germany | 6 hrs. | 1800 units |
| England | 4 hrs. | 1600 units |
| Russia | 9 hrs. | 5400 units |
| Japan | 7 hrs. | 4900 units |
Note:
| Generator/unit | Hours | 4 | 6 | 7 | 9 |
| Germany | 300 | 1200 | 1800 | 2100 | 2700 |
| England | 400 | 1600 | 2400 | 2800 | 3600 |
| Russia | 600 | 2400 | 3600 | 4200 | 5400 |
| Japan | 700 | 2800 | 4200 | 4900 | 6300 |
These generators can produce:
Maximum - (1200 + 2400 +4200 + 6300) = 14100 units.
Minimum – (2700 + 2800 + 3600 + 2800) = 11900 units.
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