If 7x − 5y = 20 and 12x + 5y = 75, what is the value of xy ?
PYQ SSC JE (Junior Engineer) 2014
If 7x − 5y = 20 and 12x + 5y = 75, what is the value of xy ?
- A.
30
- B.
15
- C.
18
- D.
20
Attempted by 6 students.
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