Then x/10+(x-y-2)/15+2/30 =1(1).
x/ 12+y/ 15 = 1(2)
That is 3x-2y=32 (3)
5x+4y=60 (4)
(3)*2+(4), get
1 1x= 124
X= 124/ 1 1。
Because124/11>10.
So there is no solution.