Answer:
17 i think
Step-by-step explanation:
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AND THEN WHAT
Answer:
I think you forgot part of the question
Step-by-step explanation:
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
I believe you will need to find what -0.125 of an inch is, subtract that from 16, then divide that into 11.