Question

At a candy store, Erika bought 3 kilograms of cinnamon red hots and 1 kilogram of gummy bears for $21.00. Meanwhile, Irene bought 3 kilograms of cinnamon red hots and 3 kilograms of gummy bears for $39.00. What is the cost of one kilogram of each type of candy?

Answer 1

use simultaneous equation

Answer 2

take C for Cinnamon and G for Gummy bears and they have said two ppl bought them which means they are providing you with two equations

for Erika >>> 3C + G = 21

For Irene >>> 3C + 3G = 39

subtract Irene's equation from Erika

and you should get -2G = -18
G = 9

now substitute on any one of the equations above