SOLUTION: Maria and her classmates are standing with other people in a line of 35 people waiting to buy tickets. Maria is last in this line of classmates and 20th from the front of the whole

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Question 1161835: Maria and her classmates are standing with other people in a line of 35 people waiting to buy tickets. Maria is last in this line of classmates and 20th from the front of the whole line. Maria's classmate leading the line of classmates is 23rd from the end of the whole line. How many classmates does Maria have?
Answer by ikleyn(52787) About Me  (Show Source):
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The last person in the line is in position 35.


The Maria's leading classmate is in the position 35-23+1 = 13.


So, Maria's classmates are from position 13 to 19 (not including herself), and their number is 19-12 = 7 persons.


ANSWER.  Maria has 7 classmates  (not including herself).

Solved.