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Question

An electric meter gives a reading of 10% less than the actual consumption. If the reading of one month is 180 units, then the actual consumption is

A
162 units
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B
200 units
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C
190 units
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D
none of these
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Solution

The correct option is B 200 units
Reading of one month=180 units, which is 10% less than actual units
Therefore Reading of one month is 90% of actual consumption
so, when 90 is consumed resding is 180 units
when 100 will be consumed(actual consumption) reading will be 18090×100=200units

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