Answer:
m = 2
Step-by-step explanation:
The number of cups of marshmallows, m, needed for r cups of Rice Krispy r is described by the equation :
r= 1.5m ...(1)
We need to find the no. of marshmallows are needed to mix with 3 cups of Rice Krispies.
Pu r = 3 in equatin (1) :
[tex]m=\dfrac{r}{1.5}\\\\m=\dfrac{3}{1.5}\\\\m=2[/tex]
So, there are 2 cups of marshmallows .