math
posted by Dell .
Fresh Grapes contain 80 percent water by weight and 20 percent juice, whereas dried grapes contain 15 percent water by weight with the rest juice. How many punds of dried grapes are needed to yield the same amount of juice as 34 pounds of fresh grapes?

34lbs*(.2)=6.8lbs of juice from the fresh grapes.
let x=# of pounds of dried grapes needed
We know dried grapes are 85 percent juice (.85). We also know we want 6.8lbs of juice.
.85x=6.8
solve for x
Respond to this Question
Similar Questions

Algebra
One canned juice drink is 25 percent orange juice; another is 10 percent orange juice How many liters of each should be mixed together in order to get 15L that is 23 percent orange juice? 
Physics
A bunch of grapes is placed in a spring scale at a supermarket. The grapes oscillate up and down with a period of 0.41 s, and the spring in the scale has a force constant of 640 N/m. What is the mass of the grapes? 
Math
Ms. Ervine has a basket of grapes. If she gives 6 grapes to each of her students, she will have 2 grapes left. If she gives 7 grapes to each of her students, she will have to buy 11 more grapes. A) How many students does Ms. Ervine … 
english / need proof reading
first of all, i'm an esl student and i'm bad in making research paper. please give me advice on how i can improve. here is my work that needs proof reading. ty Fermentation has been used for many years to produce beverages such as … 
Percent word problem
A pitcher holds 2 gallons of orange juice. The orange juice is made 20% concentrated juice and 80% water. How much water is used in the orange juice? 
algebra
A sausage sample was found to contain 65% moisture, based on fresh weight. The sausage was dried in an oven until its moisture content was 10% . A 2.0 g portion of the dried sausage was extracted with the Soxhlet method to determine … 
Math
Kelly makes fruit juice each morning. She uses 2 1/3 pints of strawberries and 1 2/5 pints of grapes in her juice. If she doubles her recipe, how many more points of strawberries than pints of grapes will she use? 
math
Mr. Angulo buys 5/8 pound of red grapes and 3/8 pound of green grapes. How many pounds of grapes did mr.angulo buy in all? 
Math
A sausage sample was found to contain 65% moisture, based on fresh weight. The sausage was dried in an oven until its moisture content was 10%. A 2.0 g portion of the dried sausage was extracted with the Soxhlet method to determine … 
Math
Mr.angulo buys 5/8 pounds of red grapes and 3/8 pounds of green grapes how many pounds of grapes did Mr. Angelo buy in all