Math algebra

posted by Shane

The radiator in a car is filled with a solution of 60% antifreeze and 40% water. The manufacturer of the the antifreeze suggests that, for summer diving, optimal cooling of the engine is obtained with only 50% antifreeze. If the capacity of the radiator is 3.6 liters, how much coolant should be drained and replaced with waterto reduce antifreeze concentration to the recommended level.

  1. Damon

    presently is
    .6 * 3.6 = 2.16 af
    .4 * 3.6 = 1.44 h2o

    should be
    .5 * 3.6 = 1.8 af
    1.8 h2o

    add x liters water
    take out .6 x af and .4 x water

    new af = 1.8 = 2.16 - .6 x
    so
    .6 x = .36
    x = .6
    ==============
    check
    new water = 1.44 - .4(.6) + .6
    = 1.8 whew

Respond to this Question

First Name

Your Answer

Similar Questions

  1. algebra help please

    Mixture Problem... An auto tech needs a radiator to have a 40% antifreeze solution. The radiator currently is filled with 4 gallons of a 25% antifreeze solution. How much of the antifreeze mixture should be drained from the car if …
  2. Algebra

    The radiator in Natalies car contains 6.3L of antifreeze and water.This mixture is 30% antifreeze.How much of this mixture should she drain and replace with pure antifreeze so that there will be a mixture of 505 antifreeze?
  3. algebra

    A mechanic is working on a car that has a 10 Liter radiator that is currently filled with a mixture of water and antifreeze. thirty percent of the 10 liters is antifreeze and the rest is water. how much needs to be drained and replaced …
  4. math

    The radiator in a car is filled with a solution of 70 per cent antifreeze and 30 per cent water. The manufacturer of the antifreeze suggests that for summer driving, optimal cooling of the engine is obtained with only 50 per cent antifreeze. …
  5. math

    The radiator in a car is filled with a solution of 70 per cent antifreeze and 30 per cent water. The manufacturer of the antifreeze suggests that for summer driving, optimal cooling of the engine is obtained with only 50 per cent antifreeze. …
  6. Algebra

    The radiator in a car is filled with a solution of 75 per cent antifreeze and 25 per cent water. The manufacturer of the antifreeze suggests that for summer driving, optimal cooling of the engine is obtained with only 50 per cent antifreeze. …
  7. Math

    The radiator in a car is filled with a solution of 60% antifreeze and 40% water. The manufacturer of the the antifreeze suggests that, for summer diving, optimal cooling of the engine is obtained with only 50% antifreeze. If the capacity …
  8. math

    At the end of Summer, Puss discovers that his radiator antifreeze solution has dropped below the safe level. If the radiator contains 4 gallons of a 25% antifreeze solution, how many gallons of pure antifreeze must he add to bring …
  9. math

    A mechanic needs a radiator to have 40% antifreeze solution. The radiator currently is filled with 5 gallons of 15% antifreeze solution. How much antifreeze mixture should be drained from the car if the mechanic replaces it with pure …
  10. Math (Algebra II)

    A mechanic says your radiator has only 40% antifreeze (the rest is water), but it needs to be 80% antifreeze. How much of the solution should be replaced with antifreeze?

More Similar Questions