SOLUTION: Question 18 Two apples and one orange together cost 72 cent. One apple and two oranges together costs 63 cent. How much does one orange cost? Enter your answer as a whole number,

Algebra ->  Human-and-algebraic-language -> SOLUTION: Question 18 Two apples and one orange together cost 72 cent. One apple and two oranges together costs 63 cent. How much does one orange cost? Enter your answer as a whole number,       Log On


   



Question 905919: Question 18
Two apples and one orange together cost 72 cent. One apple and two oranges together costs 63 cent. How much does one orange cost? Enter your answer as a whole number, i.e. no € symbol.


Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
One question at a time please!
Two apples and one orange together cost 72 cent. One apple and two oranges together costs 63 cent. How much does one orange cost? Enter your answer as a whole number, i.e. no € symbol.
2a+1o=72
1a+2o=63
multiply #2 by 2
2a+4o=126
multiply #1 by -1
2a+4o=126
-2a-1o=-72
add
3o=54
o=18
One orange costs 18 cents