Question

Someone has a net worth of 7.72 x 10^10. This person now decides to give one eighth of a percent (0.125%) of their new net worth to charity. How many dollars are given to charity?

Answer 1

Let's begin by identifying key information given to us:

Net worth (N) = 7.72 * 10^10

Charity = 0.125% * 7.72 * 10^10

$\begin{gathered} Charity=0.125\cdot7.72\cdot10^{10}=\frac{125}{1000}\cdot7.72\cdot10^{10^{}} \\ Charity=125\cdot10^{-3}\cdot7.72\cdot10^{10}=125\cdot7.72\cdot10^{10-3}=125\cdot7.72\cdot10^7 \\ Charity=9.65\cdot10^9 \end{gathered}$