Thirty percent of $60 is $18. The mathematical equation used to solve this problem is: 0.30 x $60 = N. An alternative method is to multiply 30 by $60 and then divide the answer by 100. Thus, 30 x $60 = $1,800, and $1,800 / 100 = $18.
Continue ReadingPercentage problems consist of three values: the base, the rate or percent, and the percentage or amount. The base is the quantity from which a percentage is taken. In the given equation, $60 is the base, while 30 is the rate or percent. The percentage or amount, which is what this particular example seeks to find, is $18.
Percentage problems are often useful in determining the final price of an item on clearance after a certain price deduction. For example if a dress originally costs $50 and is marked 30 percent off, the equation $50 x 0.30 = $15 lets the shopper know she can expect to pay $15 less than usual for the dress, or $35.
Learn more about Fractions & PercentagesTwo-fifths is equivalent to 40 percent. Dividing the numerator, 2, by the denominator, 5, yields a decimal value of 0.40. Decimal values can be converted to percentages by multiplying by 100, which means that 0.40 is equal to 40 percent.
Full Answer >The best way to practice dividing decimals is to try many different problems until you can remember the steps. Many tutorials can give you examples to try, such as dividing a decimal by another decimal, dividing a whole number by a decimal, and dividing a decimal by a whole number.
Full Answer >To calculate rate per 1,000, place the ratio you know on one side of an equation, and place x/1,000 on the other side of the equation. Then, use algebra to solve for "x."
Full Answer >The decimal form of 4/5 is .8, which can also be written as 0.8 or 0.80. Fractions can be converted into decimals using a calculator or by doing the math manually.
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