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17 24 As a Percentage

Are you a 24-hour day person or night owl? This infographic from How Does Your Garden Grow? compares 24-hour days of each season and the work week.

In this section we learn how to express one number as a percentage of annother. For example, by the end of this section we'll have no trouble showing that: \[18 = 45\% \ \text{of} \ 40\] We start by learning the method as well as read through a worked example before working through some exercises.

In order to lose weight Serge decided to cut his daily calory intake to \(2200\) calories, instead of the \(2500\) calories he used to take. Express his new daily intake of calories as a percentage of the previous. (Source: www.radfordmathematics.com)

Remember that in decimal multiplication, you multiply as if there were no decimal points, and the answer will have as many “decimal digits” to the right of the decimal point as the total number of decimal digits of all of the factors. So when you multiply 0.7 × 80, think of multiplying 7 × 80 = 560. Since 0.7 has one decimal digit, and 80 has none, the answer has one decimal digit: 56.0 Thus, 0.7 × 80 = 56.

The easiest way to do these, is to move the fraction around. If you multiply both sides by 100, you get A (your unknown) = 100x divided by y. Just plug in the numbers and out will come the answer. Some examples may make this even clearer. (Source: www.skillsyouneed.com)

In calculating 17% of a number, sales tax, credit cards cash back bonus, interest, discounts, interest per annum, dollars, pounds, coupons,17% off, 17% of price or something, we use the formula above to find the answer. The equation for the calculation is very simple and direct. You can also compute other number values by using the calculator above and enter any value you want to compute.percent dollar to pound = 0 pound

Step 2: we write \(\frac{3}{5}\) as an equivalent fraction over \(100\). Using the fact that \(100 = 5\times 20\), we multiply both the numerator and the denominator by \(20\) to obtain our fraction: \[\frac{3}{5} = \frac{3\times 20}{5\times 20} = \frac{60}{100}\] Finally, since \(\frac{60}{100} = 60\%\) we can state that \(3\) is \(60\%\) of \(5\). (Source: www.radfordmathematics.com)