Question

If the vacuum pump removes 1/4 of the air remaining in a cylinder at a time, what is the amount of air present in the cylinder after each removal?

(a) 3/4

(b) 1/2

(c) 1/4

(d) 1/8

Answer 1

The amount of air present in the cylinder decreases by 1/4 after each removal with the vacuum pump.

Step-by-step explanation:

When the vacuum pump removes 1/4 of the air remaining in a cylinder at a time, the amount of air present in the cylinder after each removal is decreased by 1/4. This means that 3/4 of the original air remains after the first removal, then 1/2 remains after the second removal, 1/4 remains after the third removal, and 1/8 remains after the fourth removal.