math

posted by .

A drum is 2/3 filled with oil.15 litres of oil is removed from the drum. The drum is now 3/5 full, find the capacity of the drum in litres.

  • math -

    OK. So let's create a formula of some sort. So what do we know?

    - When we remove 15 L from 2/3 filled drum, we have only 3/5 of the drum full

    Let's change this to a mathematical sentence.

    Let's say that whole drum holds 'x' Litres
    So we can say the following:

    2/3 x - 15 = 3/5 x
    (So 2/3 of the total volume of the drum minus 15 L is equal to 3/5 of the total volume of the drum)
    2/3 x - 3/5 x = 15
    1/15 x = 15
    x = 15 * 15
    x = 225 L

    So the capacity of the drum should be 225 L.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Physics Help!

    Q.1:What would a drummer do to make the sound of a drum give a note of lower pitch?
  2. geometry

    a cylindrical oil drum is 6 feet long and has a radius of 2.5 feet?
  3. Physics

    Because gasoline is less dense than water, drums containing gasoline will float in water. Suppose a 220- L steel drum is completely full of gasoline. What total volume of steel can be used in making the drum if the gasoline-filled …
  4. math

    an oil drum is 8ft high and 2 ft in diameter if the drum is half full how much is in cylinder. please show explanation
  5. Maths

    The circumference of the base of a cylindrical oil drum is 204cm. Calculate the diameter of the drum.
  6. math/geometry

    Oil from a drum leaks into water surrounding the drum, creating a circular oil slick 100 square feet in area.Find the scale factor of the size transformation of the oil slick when it is 450 square feet in area. Round to the nearest …
  7. physics please help

    A drum (see Figure 10.2) has a radius of 0.40 m and a moment of inertia of 2.3 kg ∙ m2. The frictional torque of the drum axle is A 14 m length of rope is wound around the rim. The drum is initially at rest. A constant force …
  8. maths

    I don't know how to solve this question.urgent A one side open cylindrical drum has inner radius 28cm.and height 2.1m.How much water you can store in the drum.Express in litres.(1 litre=1000cc.)
  9. Physics (density)

    A steel drum (barrel) has a volume of 200 Liters and a mass of 16 kg. It is filled to the top with an unknown liquid, sealed and thrown into water. It is floating with 50% of its volume underwater. What is the density of the liquid …
  10. thermodynamics

    a drum has height of 5 meters filled with water and open to atmosphere. compute for pressure acting st the middle of the drum.

More Similar Questions