A trader bought 10 bottles of red and white wine and paid 230. The white whine costs 20 per bottle and the red costs 25 per bottle. how many bottles of each kind did the trader buy?

Question

I think this is a multi-step problem but I'm not sure how to put the variables.

Answer 1

r represents the number of reds

10 - r represents the number of whites

25r + 20(10 - r) = 230

Can you solve for r and answer?