A business person buys potatoes of two different varieties $P$ and $Q$, mixes them in a certain ratio and sells them at ₹ $192$ per kg.
The cost of the variety $P$ is ₹ $800$ for $5$ kg.
The cost of the variety $Q$ is ₹ $800$ for $4$ kg.
If the person gets $8 \%$ profit, what is the $P: Q$ ratio (by weight)?
- $5: 4$
- $3: 4$
- $3: 2$
- $1: 1$
