Ivanna drove 420 miles using 18 gallons of gas. At this rate, how many gallons of gas would she need to drive 357 miles?
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It is given that there are 41 males and 48 females in the small school.
So, the number of ways a male student can be chosen from 41 males is
Likewise, the number of ways a female student can be chosen from 48 females is .
Thus, the total number of ways in which 2-person combinations are possible to represent the student body at the PTSAC meetings will be given by: