A bouquet of lilies and tulips has 20 flowers lilies cost four dollars each and tulips cost two dollars each the bouquet cost $56 how many lilies X and tulips Y are in the bouquet?

Answer:
8 lilies & 12 tulips
Step-by-step explanation:
x+y=20
4x+2x=$56
solve for x by multiplying 4 to all the numbers in the first equation.
after that, subtract the number that x was by 20...