-- advertisement --

Percentage

  1. The selling price and cost price of an article differs by 480. What is the selling price in case the profit percentage is 20%?
    1. 2400
    2. 2500
    3. 2600
    4. 2000
  1. View Hint | View Answer | Workspace | Discuss In Forum | Report

    SP - CP = 480

    Correct Option: A

    SP - CP = 480
    1.2x - x = 480
    ⇒0.2x = 480
    ⇒x = 2400

    Report

  1. If a person sells a wooden furniture at 8% profit against 8% loss, then he could had earned Rs12 more. What is the cost price of furniture?
    1. 72
    2. 70
    3. 80
    4. 75
  1. View Hint | View Answer | Workspace | Discuss In Forum | Report

    SP at Profit - SP at loss = Rs 12

    Correct Option: D

    Let Cost Price (CP) = x
    Then Selling Price(SP) if he sells at profit = x(1+8%) = 1.08x
    and SP, if he sells at loss = x(1-8%) = 0.92%
    Given, 1.08%-0.92% = Rs12
    0.16x = Rs.12
    ⇒x = Rs.75

    Report

-- advertisement --


  1. Calculate the amount of water which should be added to 80% solution of Sulphuric acid to make it a 50% solution?
    1. 60cc
    2. 80cc
    3. 75cc
    4. 70cc
  1. View Hint | View Answer | Workspace | Discuss In Forum | Report

    Assume as x be the amount of water added to make concentration of 50%

    Correct Option: A

    Concentration of Sulphuric acid = 80%
    So in a 100cc, Sulphuric acid = 80cc and water = 20cc
    Let x be the amount of water added to make concentration of 50%
    ⇒80/(100+x) = 50/100
    ⇒ 80/(100+x) = 1/2
    ∴ x = 60cc

    Report

  1. An metallic alloy contains 20g copper, 20g tin and 40g silver.Then find out the percentage of tin in the alloy?
    1. 20%
    2. 30%
    3. 25%
    4. 40%
  1. View Hint | View Answer | Workspace | Discuss In Forum | Report

    Percentage of silver = weight of silver/ weight of alloy

    Correct Option: C

    Total weight of alloy = 20+20+ 40 = 80g
    Weight of tin = 20g
    Percentage of tin = 20g/80g x 100
    =25%

    Report

  1. If the price of petrol is increased by 20% and subsequently by 40%. If the original price was Rs25 per litre then what is then the final price per litre?
    1. 42
    2. 45
    3. 48
    4. 40
  1. View Hint | View Answer | Workspace | Discuss In Forum | Report

    Final price = Initial price x (1 + 1st increase in percent) x (1 + 2nd increase in percent)

    Correct Option: A

    Final Price = 25 x (1 + 20/100) x (1 + 40/100)
    =Rs.25 x 1.2 x 1.4
    = Rs. 42

    Report

-- advertisement --

-- advertisement --