A Parking lot Contains 160 Vehicles. Each Vehicle is either a car or a truck, and each vehicle is either red or green. 70 vehicles are red, and 120 vehicles are cars. If there are 18 green trucks, how many red cars are there?
A. 54
B. 50
C. 48
D. 45
Answer: Option C
1st upon
the total row is like
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
in the above row 7 is the position of left side and 7 is also a position of 14 to right side so ans will be 20