Question
The average daily income of a daily wage worker, in the
month of January is Rs. 100. If his average income on 1st 13 days of the month is Rs. 50 and on last 16 days of the month is Rs. 125, then find his average income on remaining two days of the month.Solution
His total income in the month = 31 × 100 = Rs. 3100
His income of 1st 13 days = 13 × 50 = Rs. 650
His income in last 16 days = 16 × 125 = Rs. 2000
Therefore, his income in the remaining two days = 3100 – (650 + 2000) = Rs. 450
Required average = (450/2) = Rs. 225
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