Thirty percent of 40 equals 12. This can be calculated by multiplying 30/100 x 40. It can also be found by multiplying 0.3 and 40. In both instances, the answer is 12.
Continue ReadingPercentages are important in math and science. Often, percentage calculations must be completed from word problems. In this instance, the word "of" always indicates multiplication. For this problem, 30 percent of 40 equals 30/100 multiplied by 40.
The first step of percentage problems is to always convert the percentage to a decimal point or a fraction. In this instance, 30 percent can be converted into 30/100 or 0.3. Once the percentage has been converted, multiply the decimal or fraction by the whole amount to determine the final percentage.
Learn more about Fractions & PercentagesTelling time, baking cakes and shopping with discounts are some examples of fractions in everyday life. Each of these activities affect the daily life of the average person and use multiple fractions.
Full Answer >In percent form, two-thirds is 66.67 percent. To determine this, one divides two by three with a calculator to find 0.66666. To find this fraction in percent form, one has to multiply 0.66666 by 100 to find the answer 66.666 percent, which can be rounded 66.666 to the nearest hundredth to arrive at 66.67 percent.
Full Answer >To find the quotient of two fractions, take the reciprocal of the divisor, or bottom fraction, and multiply it by the first fraction. Fractions can be multiplied together by multiplying the numerators together and multiplying the denominators together.
Full Answer >One way to write the number 7.5 as a fraction is 75/10. This answer is easy to obtain because it only involves moving the decimal one place to the right. Since 7.5 is equal to 7.5 over one, then moving the decimal place to the right gives 75 over 10.
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