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How many quarts of pure antifreeze must be added to 5 quarts of 20 percent antifreeze to make a 30 percent antifreeze solution?
In the original solution, you have 5 quarts total, 20% antifreeze. So 20% * 5 = 1. You have 4 qt water and 1 qt antifreeze. You will add an amount A, to this mixture. When you add, the new total volume (in quarts) is 5 + A, and the percentage is:(1 + A)/(5 + A) x 100%. So when you start out at A = zero, you have 1/5 x 100% = 20%.So set up the equation (1 + A)/(5 + A) * 100 = 30, and solve for A.Multiply both sides by (5+A) and isolate the term A. Note that since you are adding, the value of A will never be negative (so you don't have to worry about the denominator (5+A) being zero.Answer = 5/7 (quarts) = 0.714285714285155 quarts.
Is 19 quarts bigger than 5 gallons?
5 gallons is equal to 20 quarts. This means 5 gallons is greater than 19 quarts.
Is 19 quarts greater than 5 gallons?
4 quarts in 1 gallon. 5 gallons times four equals 20 quarts. 19 quarts is not bigger than 5 gallons.
What is 5 the percent of 20?
Five Percent of 20 would be 1.
How much money is 20 percent of 32.00?
6.40 because if you can find 25 percent and 5 percent you can take 5 percent from 25 percent for 20 percent.
