How concentrated is my tea?

Number Theory Level pending

Two kinds of tea worth $$126\text{kg}$$ and $$135\text{kg}$$ are mixed with another kind of tea in the ratio $$1:1:2$$.

If the mixture is worth $$153 \text{kg}$$.

Find the price of third variety (answer your answer per $$1 \text{kg}$$).

Picture Source File: Wikimedia

×