Fritz normally commutes at an average speed of 36 miles per hour. but this morning's heavy trafc held him to only 6 24 miles per hour. He must determine whether he can drive home fast enough this evening in order to maintain his usual round-trip average speed. In order to maintain his usual average round-trip speed, Fritz will have to drive home at D miles per hour. After one year Jenny's two mutual funds returned a total of $6930. The rst fund returned 5% and the second, in which he had invested $7000 more, returned 8%. What was the amount of Jenny's original investment? Jonny's original investment was $D. Points: 0 of 1 Save Trent can deliver his newspapers in 40 minutes. It takes Lois 60 minutes to do the same route. How long would it take them to deliver the newspapers if they work together? It will take minutes.A person X can clean up all of the crime in a city in 8 hr working alone. Person Y can do the same job alone in 12 hr. If person Y starts crime fighting at 9 A.M. and person X joins him at 11 A.M., at what time will they have all the crime cleaned up? . . . At they have all the crime cleaned up.If Mario plans to develop a circular race track 2.25 mi in circumference on a square plot of land. then what is the minimum number of acres that he needs? (One acre is equal to 43,560 z.) D acres (Do not round until the nal answer. Then round to two decimal places as needed.) Rick owns a four-sided lot that lies between two parallel streets. Ifthe lot is 118,000-ft2 and has 600 ft frontage on one street and 200 ft frontage on the other, then how far apart are the streets? The streets are |:| feet apart. A circular tank with a diameter of 50 feet and a horizontal bottom contains about 1T6.000 gallons of water. Find the depth of water in the tank. One cubic foot contains approximately 7.5 gallons of water. The depth of water in the tank is about D feet deep. (Round to the nearest foot.) ' 7 According to the Internal Revenue Service (IRS), a single taxpayer with a taxable income between $53,550 and $132,600 in 2000 paid $14,382 plus 31% of the amount over $63,550. If Azim paid $16,320 in federal income tax for 2000, then what was his total taxable income for the year? For the year 2000, Azim's taxable income was $|:]. (Round to the nearest dollar.) l How much water must be added to a 6-Iiter solution that contains 5% extract of baneberry to get a solution that contains 4% extract of baneberry? The amount of water that must be added is D litres. (Type an integer or a simplied fraction.) How manyr gallons of a 50% antifreeze solution must be mixed with 90 gallons of 15% antifreeze to get a mixture that is 40% antifreeze? The number of gallons that must be mixed is D gallons. [Round to the nearest whole number.) The owner of a health-food store sells dried apples for $1.20 per quarter-pound, and dried apricots for $1.50 per quarter-pound. How many pounds of each must he mix together to get 20 lb of a mixture that sells for $1.35 per quarter-pound? He must mix |:| lb of apples and Ellis of apricots. [Type integers or fractions.)