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October 10th, 2014, 03:51 AM   #1
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Lightbulb Can anyone solve this question for me plz plz plz ???

Q.In a row of girls, Mradula is 18th from the right and Sanjana is 18th from the left. If both of them exchange their position, Sanjana becomes 25th from the left, how many girls are there in the row ?

(A) 40 (B) 41 (C) 42 (D) 35

plz answer`
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October 10th, 2014, 04:25 AM   #2
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October 10th, 2014, 12:40 PM   #3
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Sanjana's new position is $\displaystyle 25^{th}$ from left. But it is the same as Mradula's earlier position which is $\displaystyle 18^{th}$ from the right.
Then the total number of girls = (rank from left + rank from right) -1 = (18+25)-1 = 43-1 = 42.
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