📢 Too many exams? Don’t know which one suits you best? Book Your Free Expert 👉 call Now!


    âš¡ Month End Offer - Flat 52% Off On All Courses! Enroll Now âš¡
    00:00:00 AM Left

    Question

    Because of a 10% rise in mobile data prices, Ayesha decided

    to use 15% less data. Find out the percentage change in her data expenses.
    A 4.5% decrease Correct Answer Incorrect Answer
    B 2.5% increase Correct Answer Incorrect Answer
    C 6.5% decrease Correct Answer Incorrect Answer
    D 5.5% increase Correct Answer Incorrect Answer

    Solution

    ATQ,

    Let initial data price be Rs. 100a and data usage be 100b GB

    Initial expenditure = 100a × 100b = Rs. 10000ab

    New expenditure = (1.10 × 100a) × (0.85 × 100b) = Rs. 9350ab

    Required percent = [(9350ab - 10000ab) ÷ 10000ab] × 100 = -6.5% decrease

    Practice Next
    ask-question