The ratio of the two numbers is 7:4.If 8 is added to both the numbers ratio becomes 13:8.What is the smaller number?

A 52

B 56

C 38

D 40

Solution

Correct Answer: Option D

মনে করি ,সংখ্যাদ্বয় =7x ও 4x
প্রশ্নমতে , (7x+8)/(4x+8)=13/8
             বা, 56x+64=52x+104
             বা, 4x=40
             বা, x=10
অতএব , ছোট সংখ্যাটি =4×10=40

Practice More Questions on Our App!

Download our app for free and access thousands of MCQ questions with detailed solutions