Question 1175839
use combined variation formula.


formula becomes:


v = k * t / p


v is the volume
k is the constant of variation
t is the temperature
p is the pressure.


you are given that the volume is 250 when the temperature is 330 and the pressure is 25.


use that information to solve for k.


the formula becomes:


250 = k * 330 / 25


solve for k to get:


k = 250 * 25 / 330 = 18.93939393....


use that value of k to solve for v when t = 230 and p = 20.


you get:


v = 18.93939393..... * 230 / 20 = 217.8030303.....


that's your solution.