proportions
1)Patios can be made by mixing cubic meters of ash, stone, and wood chips in the ratio 5:7:3. How much stone is needed to make 45 cubic meters of patio?
2) An aluminum bar 3 feet long weighs 12 pounds. What is the weight of a similar bar that is 3 feet 4 inches long?
3) If the ratio of plums to peaches to kiwis is 10:4:5, how many plums are there if the total number of fruits is 190?
4) The ratio of girls to boys is 1:2 and that there are 22 boys, what is the number of girls?
5) A certain ore contains 21 percent gold. How much ore (in tons) is needed to obtain 882 tons of gold?
6) Scientists were studying snakes by catching, tagging, and releasing 77 snakes. A month later, the scientists come back and catch 11 snakes, of which 7 are tagged. Assuming that the catch is representative, how many snakes are there?
7) If a real estate agent receives 17 percent of the selling price of each house he sells, then what would the agent make if the house sells for $180,000?
8) If Deb cleans a 9100 square foot building for a total of $306.00, what is the amount Deb gets paid per square foot?
9) Ann weighs 259 pounds but is only 5 feet 3 inches tall. Betty is 6 feet tall. How much would you expect Betty to weigh if they have the same height/weight ratio?
