The amount of tea worth Rs.300 be added be = X
Quantity of tea taken that was worth Rs.240 =10 kg
The mixture to be produced is of Rs 260 per kg
Total quantity of tea that will be produced after mix= (10+x) kg
From the given data the equation can be written as
300x + 240 (10) = 260(10+x)
300x + 2400= 260x + 2600
40x = 200
X= 5
Solving the above, we get x=5.
5kg of tea worth Rs.300