Sum
Rambhau started the water pump at ten-thirty at night and put it off the same night at a quarter to twelve. How long was the water pump on?
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Solution
Quarter to 12 is 11:45 pm
| Hrs. | Min. | |
| 1 1 | 4 5 | Water pump put off |
| - 1 0 | 3 0 | Pump started |
| 1 | 1 5 |
∴ The pump was on for 1 hour 15 minute.
Concept: Examples of Time Measurement
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