If 20 lb of rice and 30 lb of potatoes cost $20.60, and 30 lb of rice and 12 lb of potatoes cost $17.04, how much will 10 lb of rice and 50 lb of potatoes cost? Let x be the cost of 1 lb of rice and y be the cost of 1 lb of potatoes. Set up two linear equations from the given information using x and y as the variables. 20x + 30y = 20.60 30x + 12y = 17.04 (Do not factor. Use integers or decimals for any numbers in the equations.) The cost of 10 lb of rice and 50 lb of potatoes is $ (Simplify your answer.)