NEED HELP!! MUST SOLVE WITH SYSTEM OF EQUATIONS!!

Mathematics
Tutor: None Selected Time limit: 1 Day

My story problem is "A youth group and their leaders visited mammoth cave. Two adults and 5 students in one van paid $77 for the grand tour of the cave. Two adults and 7 students in a second van paid $95 for the same tour. Find the adult price and the student price of the tour."

Apr 22nd, 2015

2a+5s=77 ; 2a+7s=95. Subtracting equations yields 2s=18, s=9. Back-substituting yields 2a+45=77, 2a=32; a=16.

Apr 22nd, 2015

Thanks!!

Apr 22nd, 2015

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