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100 lamps can be lighted 4 hrs per day for 10 days for Rs 200. How many lamps can be lighted 4 hrs per day for 10 days for Rs 600. [4 MARKS] |
| Answer» 100 lamps can be lighted 4 hrs per day for 10 days for Rs 200. How many lamps can be lighted 4 hrs per day for 10 days for Rs 600. [4 MARKS] | |