Hi there,
The equation to this is going to be : c = 3r - 3s
If you want to get the lower price down you are going to have to buy 3 shampoo bottles in order to get a lower price. The cost you save is the main difference from a regular price. And the answer is c = 3r - 3s
Answer:
Por el teorema de 30 grados en un triangulo rectangulo la linea roja es
veces la longitud del cateto opuesto al angulo de de 30. Por tanto la linea roja será:

Luego
I think the answer is 1.97 hope it helps you
60 is 45 percent of about 133.