πŸ“’ Too many exams? Don’t know which one suits you best? Book Your Free Expert πŸ‘‰ call Now!


    Question

    The cost of a mobile phone was

    first increased by 25% and then decreased by 25%. If the new cost of the mobile phone is Rs. 675, find the original cost of the mobile phone.
    A Rs.700 Correct Answer Incorrect Answer
    B Rs.720 Correct Answer Incorrect Answer
    C Rs.620 Correct Answer Incorrect Answer
    D None of these Correct Answer Incorrect Answer

    Solution

    ATQ,

    Let the original price of the mobile phone be Rs. β€˜100x’ So, new price of the mobile phone = 100x Γ— 1.25 Γ— 0.75 = Rs. β€˜93.75x’ So, 93.75x = 675 So, x = 7.2 So, original price of the mobile phone = 100 Γ— 7.2 = Rs. 720 Alternate solution: Original cost of the mobile phone = 675 Γ· 0.75 Γ· 1.25 = Rs.720

    Practice Next

    Relevant for Exams:

    ask-question
    9