13. Time taken by A alone to finish a piece of work is 60% more than that taken by A and B together to finish the same piece of work. C is twice as efficient as B. If B and C together can complete the same piece of 1 work in 13-days, in how many days can 3 A alone finish the same piece of work? [SBI PO (Pre) 2017] (b) 24 (C) 16 (d) 28 (e) Other than those given as options
Answers
Step-by-step explanation:
. Time taken by A alone to finish a piece of work is 60% more than that taken by A and B together to finish the same piece of work. C is twice as efficient as B. If B and C together can complete the same piece of 1 work in 13-days, in how many days can 3 A alone finish the same piece of work? [SBI PO (Pre) 2017] (b) 24 (C) 16 (d) 28 (e) Other than those given as options
. Time taken by A alone to finish a piece of work is 60% more than that taken by A and B together to finish the same piece of work. C is twice as efficient as B. If B and C together can complete the same piece of 1 work in 13-days, in how many days can 3 A alone finish the same piece of work? [SBI PO (Pre) 2017] (b) 24 (C) 16 (d) 28 (e) Other than those given as options
Answer:
First of all, we need to arrange the data in an ascending order. Thus, the data is presented below as:
15, 35, 43, 46, 48, 49, 50, 55
N = 8
Since the number of items in the series is even, thus the following formula is used to calculate the median.
Median=
Size of (
N
2
)th item + Size of (
N
2
+1)th item
2
=
Size of (
8
2
)th item + Size of (
8
2
+1)th item
2
=
Size of 4th item + Size of 5th item
2
=
46+48
2
=47
Thus, Median is 47.