HELP! Roni and Kelsey bought the same types of flowers from a florist. Roni bought 5 roses and 2 carnations and was charged $17.85 before tax. Kelsey purchased 1 rose and 6 carnations and was charded $12.25 before tax.
How much did the florist charge for one carnation before tax

Question

HELP! Roni and Kelsey bought the same types of flowers from a florist. Roni bought 5 roses and 2 carnations and was charged $17.85 before tax. Kelsey purchased 1 rose and 6 carnations and was charded $12.25 before tax. 
How much did the florist charge for one carnation before tax

mathstudent55 · Answer

Choose two variables to represent the number of roses and the number of carnations.

ranga · Answer

Let the cost of one rose be R.
Let the cost of one carnation be C

5R + 2C = 17.85
  R + 6C = 12.25

Eliminate R and solve for C.