3 separate groups of friends go out to celebrate at the same restaurant. The first group order 4
tostadas, 2 enchiladas and 3 burritos, their bill excluding drinks, tax or tip is $86. The second group
order 2 tostadas, 4 enchiladas and 5 burritos, their bill is $112 and the bbn third group order 3 enchiladas
and 2 burritos, their bill is $54 Calculate the cost of a single order of tostadas, a single enchilada and asingle burrito