eyeliner tutorial

The milk and water in two vessels are in the ratio 5:4 and 3:4 respectively. In what ratio the liquid in both the vessels are mixed to obtain a new mixture in vessel C containing equal amount of water and milk
a. 27:35 b. 35:27 c. 45:35 d. 35:45

Karan and Arjun run a 100 meter race, where Arjun beats Karan by 10 meters. To do a favour to Karan, arjun starts 10 meters behind the starting line in a second 100 meter race. They both run at their earlier speeds. Which of the following is true in connection with the second race
a. Karan and Arjun reach the finishing line simultaneously
b. Arjun beats Karn by 1 meter
c. Arjun beats Karan by 11 meters
d. Karan beats Arjun by 1 meter