Question

liza arranged 66 roses in 7 vases.some vases had only6 red roses and the others had only 12 pink roses. how many vases had red roses only? solve ang solution

Answer 1

Let x be the number of vases with red roses. Then 7-x is the number of vases with pink roses. 

x vases had 6 roses, for a total of 6x roses. 7-x vases had 12 roses, for a total of 84-12x roses. Then 6x + 84 - 12x = 66 
12x-6x = 84-66 
6x = 18 
x = 3 

3 vases had red roses.

Answer 2

3 vases had red rose only