How many pounds of almonds worth 20 cents a pound must be mixed with 40 pounds of peanuts worth 40 cents a pound to get a mixture of 36 cents a pound

1. 0.3 •4 is the same as 4 groups of 0.32. 7•0.8 is the same as 7 groups of 0.83. it increases by 0.5 every time, so 0.5x4 it increases by 0.9 every time, so 0.9x5. 0.9•12=10.86. 0.47•5=2.35i can finish the next ones in a separate post

Yes. there is a constant ratio of number of calories to gram of protein.12/3=24/4=32/8=44/11=4