An apple costs $x .An orange costs $y .A mango costs as much as an apple and orange combined .If i buy 10 mangoes , 20 oranges ,20 apples ,how much (in terms of x and y) must i pay?
(post your ans in the comment box if you wish )
(if you wan the ans tell me )
(2moro may be a different subject)
( if you find it not challening enought can tell me )
kailun
