Multiple Choice Questions on A girl was asked to multiply a number by 7 8 instead she divided the number by 7 8 an........... for Mathematics - All Exams Preparation

Back to Main Page

Multiple Choice Questions

A girl was asked to multiply a number by 7 8 instead she divided the number by 7 8 an...........

Quantitative Aptitude ( CCS) Number System
    Download Solution PDF

    A girl was asked to multiply a number by  7/8, instead she divided the number by 7/8 and got the result 15 more than the correct result. The sum of the digits of the number was 

    4

    Incorrect Answer

    8

    Incorrect Answer

    6

    Incorrect Answer

    11

    Correct Answer
    छोटे Courses बड़े Results
    Master Number System
    Prepare through Micro-courses
    Try Now
    Explanation:

    Let the number be x, then 

    According to the question, 
    8x/7-7x/8=15
    ⇒8x/7-7x/8=15
    ⇒(64x – 49x)/56=15
    ⇒15x/56=15
    x = 56 
    ∴ Sum of the digits of number 
    = 5 + 6 = 11 

    By: Amit Kumar
    ProfileResources

    Let's Discuss

    Master
    Number System
    With abhipedia
    Micro Courses
    Try Now
    What our students have to say
    Review on us
    Download Abhipedia Android App

    Access to prime resources

    Downlod from playstore
    download android app download android app for free