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In a students queue Kamala is in the 12th position from left and Shyam is in 18th position from right. When Kamala and Shyam interchange their position, than Kamala is 25th from left. Find the total number of students in the queue?

A40

B41

C42

D43

Answer:

C. 42

Read Explanation:

11+ Kamala + ......+ Shyam + 17 When they interchanging the position Kamala went to Shyam's place and her position from left is 25 ie 11+Shyam+..... + Kamala +17 Kamala is 25th from left, ie 12+x+Kamala=25 13+x=25 x=12 There are 12 people between Shyam and Kamala Then 11+Shyam + 12+Kamala+17= 42 ie there are 42 people in the queue.


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