we have that
x--------------> jawbreaker--------------> 0.25 lb each
y------------- > gumball--------------> 0.10 lb
we know that
0.25x+0.10 y<=1----------> remember that 0.25=1/4 and 0.10=1/10
therefore
(1/4)x+(1/10)y<=1
the answer is the option A
using a graph tool
see the solution in the attached figure
the solution is the triangular figure
