Question
Question: If 5a + 5b + 20c = t, then the value of t for which the line ax + by + c – 1 = 0 always passes thro...
If 5a + 5b + 20c = t, then the value of t for which the line
ax + by + c – 1 = 0 always passes through a fixed point is-
A
0
B
20
C
30
D
None of these
Answer
20
Explanation
Solution
Equation of line 
+ 
+ 1= 0 has two independent parameter
5a + 5b + 20 c = t
5a + 5b = t – 20 c
R.H.S. be independent of c if t = 20