1 year ago

Need help with this question I can’t get the answer

Mathematics

1 answer:

Dmitrij [34]1 year ago

7 0

We can use a rule of three to solve the exercise.

$\begin{gathered} 175\rightarrow100\% \\ x\rightarrow92\% \\ \text{ Because }100\%-8\%=92\% \end{gathered}$ $\begin{gathered} x=\frac{92\%\cdot175}{100\%} \\ x=\frac{92\cdot175}{100} \\ x=\frac{16100}{100} \\ x=161 \end{gathered}$

Therefore, there were 161 robberies in Springfield in 2012.

You might be interested in

damian needs to buy three pints of juice the store does not sell in pints of juice so damian had to but 3 quarts of juice which

Blababa [14]

Well two pints equal one quart

If Damian needed 3 pints
but buys in 3 quarts
then he would have to buy 3 quarts

Which 3 quarts is equivalent to 6 pints.

8 0

4 years ago

The value of a motorbike depreciates by 32% per year. Work out the current value of a motorbike bought 5 years ago for £3600

DaniilM [7]

$\bf \qquad \textit{Amount for Exponential Decay}
\\\\
A=P(1 - r)^t\qquad 
\begin{cases}
A=\textit{accumulated amount}\\
P=\textit{initial amount}\to &3600\\
r=rate\to 32\%\to \frac{32}{100}\to &0.32\\
t=\textit{elapsed time}\to &5\\
\end{cases}
\\\\\\
A=3600(1-0.32)^5\implies A=3600(0.68)^5\implies A\approx 523.41601$