Multiple choice

An electric meter reads 4930 KWh at the end of the month,while a month ago it read 4750 KWh.How many units of electrical energy have been consumed during the month and what will be the cost of electrical energy if 1 unit of energy costs Rs.2.50?

  1. 180 units,Rs 450

  2. 100 units,Rs 400

  3. 80 units,Rs 400

  4. 50 units,Rs 350
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A Correct answer
Explanation

Initial reading of electric meter = 4750 KWhFinal reading of electric meter = 4930 KWhTotal energy consumed during the month = 4930 - 4750 = 180 KWh = 180 unitsCost of 1 unit = Rs 2.50Total cost of 180 units = 180 * 2.50       = Rs 450

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