Mathematics

Problem

An empty beaker has a mass of

4.0\times10^{-1}\,\text{kg}

. It is filled first with

3.25\times10^{-2}\,\text{kg}

and then with

2.5\times10^{-3}\,\text{kg}

of a liquid. What is the percentage increase in mass of the beaker after both additions, correct to two significant figures? a)

9.4\%

8.0\%

8.8\%

8.1\%