The answer is 256.25
EXPLANATION
Let
represent the number.
Then, 
We cross multiply yo obtain,

We now divide both sides by 16.

This will give us,

Therefore the number is 256.26
P(white) = 27/100 = 270/1000
Therefore, in 1,000 pulls, we eaxpect 270 white beads,
Well first you have to multiply 4*5.60 to get the 4.0 kilograms
4*5.60=22.4
then divide 5.60/2 to get the .5 kilograms more she needs.
5.60/2=2.8
then just add 2.8+22.4 to get the whole 4.5
2.8+22.4=25.2
it cost $25.20 to get the whole 4.5 kilograms of clay.
Not sure, lemme solve it out