## Percentages

 2.3 Percentages
 CONVERT DECIMALS TO PERCENTAGES

Convert $$1.5$$ to a percentage.
$$1.5=\underline{\ \ \ \ \ \ \ \ \ \ }\%$$

SOLUTION:
$$1.5=1+0.5$$
$$=100\%+50\%$$
$$=150\%$$

In conclusion, $$1.5$$ to the percentage is $$150\%$$.

Calculate the total percentage of vitamin B6, calcium and iron for a $$30\,\ell$$ serving of cereal with $$125\text{ m}\ell$$ of skimmed milk below.

SOLUTION:
$$46\%+24\%+16\%=\underline{\ \ \ \ \ \ }\%$$

$$\begin{array} {rr} \small{\color{red}{1}}\quad\;\;\; \\4\;6\;\% \\2\;4\;\% \\+\quad1\;6\;\% \\\hline 8\;6\;\% \\\hline \end{array}$$

In conclusion, the total percentage of vitamin B6, calcium and iron is $$86\%$$

 QUANTITY VALUE & PERCENTAGE VALUE

Jamel's rope length is $$2.5\text{ m}$$ while Zainab's rope length is $$90\%$$ of Jamel's rope length. How long is $$90\%$$ of $$2.5\text{ m}$$?

SOLUTION:

$$90\%$$ from $$2.5\text{ m}$$ means $$90\%\times2.5\text{ m}$$.
$$90\%\times2.5\text{ m}=\underline{\ \ \ \ \ \ \ \ \ }\text{ m}$$

$$2.5\times\dfrac{90}{100}=2.25$$

In conclusion, the length $$90\%$$ of $$2.5\text{ m}$$ rope length is $$2.25\text{ m}$$.