In what ratio must a grocer mix teas worth Rs.60 a kg and Rs.65 a kg.So that by selling the mixture at Rs. 68.20 a kg, He may gain 10%?
A. 3:2
B. 3:4
C. 3:5
D. 4:5
A. 3:2
B. 3:4
C. 3:5
D. 4:5