Question 459170
0.80x + (20-x)1.50 = 1.01*20

==> 0.80x + 30 - 1.50x = 20.2

==> -0.7x = -9.8

==> x = 14 pounds of the 80 cent per pound candy, and 

20 - x = 6 pounds of the 1.50 $ per pound candy.