coffee word problem

Question

You mix the Terraza blend with the Rift Valley blend, but always in the same proportion. Yesterday, you mixed 150 pounds of the Terraza blend with 330 pounds of the Rift Valley blend. Today, there is 60 pounds of the Terraza coffee left in stock. How many pounds of the Rift Valley coffee should you mix with it to get your secret blend

Answer 1

set up a proportion

150 T/330 RV=60 T/ ? RV

simplify the left side

15 T/33 RV=60 T/ ? RV

15*4=60

33*4=132 RV (132 pounds of Rift Valley)