Question

In what ratio two kinds of tea must be mixed together into one at Rs. 9/kg and another at Rs. 15/kg, so that the mixture may cost Rs. 10.2/kg?
(a) 4 : 1
(b) 4 : 9
(c) 4 : 7
(d) 4 : 5

Answer 1

I hope that is your answer is (a) 4:1