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Question

The average earnings of a mechanic for the first four days of a week is Rs. 18 and for the last four days is Rs. 22. If he earns Rs. 20 on the fourth day, his average earnings for the whole week is:

A
Rs. 18.95
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B
Rs. 16
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C
Rs. 20
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D
Rs. 25.71
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E
None of these
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