Question

Write the fraction or decimal as a percent. 3/50, 1/25, 5/5, 0.622,0.303, 0.06, 2.45 - Write the number in two other forms (Fraction, decimal, or percent). 19/20, 9/16, 0.4, 0.22According to the U.S. census bureau, 3/25 of all adults in the united states visited a zoo in 2007. What percent of all adults in the united states visited a zoo in 2007?A bag contains red and blue marbles. Given that 17/20 of the marbles are red, What percent of the marbles are blue?The portion of shoppers at a supermarket who pay by credit card is 0.36. What percent of shoppers at the supermarket do NOT pay by credit card?About 23/40 of a lawn is planted with kentucky bluegrass. What percent of the lawn is planted with Kentucky bluegrass?A basket contains 6 peaches and 8 plums. What is the ratio of peaches to total pieces of fruit? (my guess is 6:14)It takes 8 minutes for 3 cars to move through a car wash. At the same rate, how many cars can move through the car wash in 24 minutes?A 14-ounce box of cereal sells for $2.10. What is the unit rate?A model railroad kit contains curved tracks and straight tracks. Given that 35% of the tracks are curved, what fraction of the tracks are straight? Write the fraction in simplest form.

Answer 1

To convert the first six to percent we have 3/5 *100/1; 1/25 *100/1; and 5/5 * 100/1 this gives 60%, 4%, and 100% respectively. Then the decimals give 0.6220 = 62.2%; 0.303 = 30.3%; 0.06 = 6% and 2.45 =245% To write the two other number in fraction we have 19/20 = 0.95 and 95%; 9/16 = 0.5625 = 56.25%; 0.4 = 2/5 and 40% and 0.22 = 22% and 11/50. 3/25 visited a zoo; percent that visit a zoo is 3/25 *100 = 12% 17/20 marbles are red means 17 marbles out of 20 are red. The remaining 3 are blue. Hence % that are blue is 3/20. Shoppers who pay by credit is 0.36; thosewho don't are 1 - 0.36 = 0.64. If 23/40 is planted with Kentucky blue grass then 23/40 *100 is planted with Kentucky bluegrass which is actually 57.5 Total fruit is 8+6=14. Hence ratio of peaches to entire fruit is 6/14 = 3/7. Hence the ratio is 3:7. 3 cars take 8 minutes X cars take 24 minutes. Cross multiplying gives 9.