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


    âš¡ Azaadi sale - Celebrate Independence Day with Flat 55% Off On all courses! 13 to 17 Aug âš¡ Enroll Now

    Question

    Three numbers are in ratio 4:5:7. If the sum of the

    squares of those three numbers is 360 then find the sum of the three numbers.
    A 24 Correct Answer Incorrect Answer
    B 32 Correct Answer Incorrect Answer
    C 48 Correct Answer Incorrect Answer
    D 64 Correct Answer Incorrect Answer
    E 40 Correct Answer Incorrect Answer

    Solution

    A: B: C = 4x: 5x: 7x A2 + B2 + C2 = 16x2 + 25x2 + 49x2 = 90x2 => 90x2 = 360 => x = 2 => A + B + C = 4x + 5x + 7x = 16x = 16 × 2 = 32

    Practice Next
    ask-question

    Not sure which exam is best for you Talk to our expert

    Get My Free Call