please answer asap! with work shown please! :)

Question

pranav and james each improved their yards by planting rose bushes and ornamental grass. they bought their supplies from the same store. pranav spent $168 on 12 rose bushes and 7 bunches of ornamental grass. james spent $259 on 13 rose bushes and 14 bunches of ornamentree al grass. find the cost of one rose bush and the cost of one bunch of ornamental grass.

Answer 1

Rose cost $7, Grass cost $12

12(7)+7(12) = 84+84 = 168

13(7)+14(12) = 91+168= 259

12r+7g = 168, 13r+14g = 259

multiply the 1st by 2 then subtract the 2nd

24r+14g = 336

13r+14g = 259

11r = 77

r=77/11 = $7 for rose

7g = 168-12(7) = 168-84 = 84

g=84/7 = $12