The average time taken to deliver orders booked on a particular day is computed as follows. Let the number of orders delivered the next day be x and the number of orders delivered the day after be y. Then the average time to deliver order is (x+2y)/(x+y). On which of the following days was the average time taken to deliver orders booked the least?
Explanation:
Consider the solution to the first question of this set.
Average time taken for 13th day = 21+2×821+8=3729 = 1.27 Average time taken for 14th day = 15+2×315+3=2118 = 1.16 Average time taken for 15th day = 8+2×88+8=2416 = 1.5 Average time taken for 16th day = 13+2×1013+10=3323 = 1.43
Least of these average times is 1.16 for 14th day.
Hence, option (d).
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