The human stomach has a maximum capacity of 4.2 quarts. if a raisin has a volume of 0.2 ml, how many raisins can fill the stomach? (1 qt = 0.946 l).

number of raisins = 19866 raisins

Explanation:
First, we will convert all volumes to liters
1- For raisins:
We know that:
1 ml = 0.001 liter
One raisin has a volume of 0.2 ml
This means that:
volume of one raisin = (0.2*0.001) / 1 = 0.0002 liters
2- For the stomach:
Now, we are given that:
1 qt = 0.946 L
Therefore:
volume of stomach = (4.2*0.946) / 1 = 3.9732 liters

Now, we will get the number of raisins as follows:
Assume that the number of raisins required to completely fill the stomach is x.
Therefore:
volume of stomach = x * volume of raisin
3.9732 = 0.0002x
x = 19866 raisins

Hope this helps :)