Answer:
An candy shop sells a box of chocolate for $30
Step-by-step explanation:
I used grammerly this BETTR be right.
I want to say x=-3 and y=6.
Suppose the original price to be x.
62%x=296.4
Divide both sides by 62% to get x=478, which is the original price.
Solution :
Let A = Economics, B = Mathematics
n(A) = 311, n(B) = 243, 
a). So, 
= 311 + 243 - 135
= 419
b). n(A only) = 311 - 135
= 176
n(B only) = 243 - 135
= 108
Exactly one of these two courses

= 0.568
c). Neither economics nor mathematics


= 0.162
A problem with extra information will be difficult to solve because you may not be able to tell what information you might need to use for the problem.