Question

three oranges and two pineapples cost 360.five oranges and three pineapples cost 550.find the cost of one orange⊃

Answer 1

Answer:

The cost of one orange is 20

Step-by-step explanation:

Change orange to (x) and pineapples to (y)

Make equations for bothe of the problem

5x + 3y = 550

3x + 2y = 360

make one of the both equation the same number to cancel out each other, in this case we want orange (x) so we have to cancel out pineapples (y)

For first equation multiply by 2 and second equation multiply by 3

10x + 6y = 1100

9x + 6y = 1080

if you substrate both equation you will get x=20

Answer 2

Answer:

one orange cost 20

Step-by-step explanation:

these steps are not make sure, so don't copy on your paper and give it to the teacher.....

I don't know how to solve this math in your language, however in my country, we usually do like that:

orange =x

pineapple = y

3x + 2y= 360 (*) and 5x 3y= 550

15x + 10y= 1800 and 15x + 9y= 1650

=>y= 150

replace y=150 in (*), we have: 3x +2×150=360

=>x= 20