Question

2. When a glass is hulf filled with water, it has a mass of 510 g.

When the glass is completely filled with water, its mass is 750 g.
Find the mass of the glass when it is empty.

Answer 1

270g

Explanation:

0.5x+y = 510

x+y= 750

Calculate;

x is the mass of water

y is the mass of the glass

You will find the mass to be 270g

Answer 2

• Mass of the glass is 270 g when empty

Explanation:

Find the difference in two masses, this will give us is the mass of water in half-filled glass:

• 750 - 510 = 240 g

Now find the mass of the glass by the difference of half-filled glass with water and just water mass of same level:

• 510 - 240 = 270 g