Question

two cylinders of volume 20cc and 30cc have gas at pressure 40cm and 50cm of Hg at same temperature.If connected by a narrow pipe then the pressure is?
1.45
2.50
3.46
4.30​

Answer 1

Answer:

The easiest way to determine solution for such problems is knowing the proportions.

15 men take 24 days, assume 30 men it will take 12 days and assume 7 or 8 men it will be 48 days.

The pattern involves inverse proportions, lesser men more days and vice versa.

Coming back we need to find 9 men time period which suggests

15*24/9 = 40 days is actual solution.

Explanation: