Forty minutes is two-thirds of an hour. A fraction is found by setting up a ratio between a whole and its parts. The denominator, is the total number of parts, while the numerator, indicates how many parts are involved.
Know MoreIn this instance, the whole is one hour, which is equivalent to 60 minutes; therefore, the fraction is 40/60. To make the answer more useful, it should be simplified. To do this, find the largest number that is a factor of both the numerator and the denominator. The number 20 divides evenly into both 40 and 60, leaving the fraction 2/3.
Learn more about Fractions & PercentagesCalculating percentage from a decimal or a fraction requires multiplying by 100. For a decimal, this means moving the decimal point two places to the right; for example, .28 equals 28 percent. To convert fractions, the numerator is divided by the denominator and the quotient is multiplied by 100.
Full Answer >One method to manually convert a fraction to a decimal is to multiply the denominator, the bottom number, by a number that will make the denominator a factor of 10. Then multiply the numerator, the top number, by the same number used on the denominator. Rewrite the fraction as a decimal using place values.
Full Answer >To convert a fraction into a percent, change the fraction so that the denominator is 100. Multiply the numerator with the number that when multiplied with the original denominator gives you 100. Write down the numerator with a percent sign.
Full Answer >To calculate equivalent fractions, take a fraction and divide or multiply both of its numbers by the same figure. An action must always be performed to both parts of the fraction when calculating equivalent figures.
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