If A is greater than B by 7, B is greater than C by 16, and A + B + C is 255, then the value of 3A + C - 4B is:
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 5.
According to the question
A - B = 7
A = B + 7 ..........(1
B - C = 16
C = B -16 ..........(2
A + B + C = 255
Put value from equation 1 and 2
B + 7 + B + B - 16 = 255
3B - 9 = 255
3B = 264
B = 264/3 = 88
A = 88 + 7 = 95
C = 88 - 16 = 72
Hence, The value of 3A + C - 4B = 3 × 95 + 72 - 4 × 88 = 5