If p and q are two non zero numbers and 18(p+q) = (18+p)q, which of the following must be true?
A
q = 18
B
p <1
C
p = 18
D
q < 1
Verified Correct Answer: A.
Step-by-Step Mathematical Solution
If 18(p + q) = (18 + p)q
then 18p + 18q = 18q + pq
18p = pq \(\implies\) q = 18.
Source: Myschool Past Questions Archive (Record #9803)