Question 812011
call the packages a b and c
costs 2a+3b+4c=35,
packages a+b+c=12,
blades 6a+12b+24c=162
a = 5,   b = 3,   c = 4
check
2*5+3*3+4*4=35
10+9+16=35
35=35
ok
check
5+3+4=12
12=12
ok
check
5*6+12*3+24*4=162
3+36+96=162
66+96=162
162=162
ok