A color called passion pink is made by making red paint and white paint in a ratio 2 to 7. How many drops of white paint do you need if you use 3 drops of red paint?

The answer is supposed to be 10.5 because

When 2 red is used then 7 white do

If 3 is used then

Red 2 3

White. 7. 10.5

Ok so working here

Since we know when 2 red is used we use 7 white then how much red left? 3-2 = 1 red left so one red will equal to how much white?

So then one red has to equal to 3.5 white since u dividing to find into half since it is only two red

U gotta follow on a price of paper then u will only understand

You need 4 drops of white