New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    The average daily income of a daily wage worker, in the

    month of December is Rs. 120. If his average income on 1st 12 days of the month is Rs. 90 and on last 17 days of the month is Rs. 120, then find his average income on remaining two days of the month.
    A Rs. 300 Correct Answer Incorrect Answer
    B Rs. 230 Correct Answer Incorrect Answer
    C Rs. 280 Correct Answer Incorrect Answer
    D Rs. 590 Correct Answer Incorrect Answer
    E Rs. 110 Correct Answer Incorrect Answer

    Solution

    His total income in the month = 31 × 120 = Rs. 3720
    His income of 1st 12 days = 12 × 90 = Rs. 1080
    His income in last 17 days = 17 × 120 = Rs. 2040
    Therefore, his income in the remaining two days = 3720 – (1080 + 2040) = Rs. 600
    Required average = (600/2) = Rs. 300

    Practice Next