Solution

Here is the solution for our Rice & Wheat Question

Rice and wheat
Given the ratio of their quantities is 7:4
And the ratio of their prices is 5:8
So clearly they are purchased in the ratio 35:32.(multiplication of quantity and Price Ratios)
 

So rice for 35x and wheat for 32x.
35x+32x=2010
67x=2010
implying x=30
Hence rice is got for 30*35
=Rs.1050