Q.

The numerator of a fraction is 4 less than the denominator. If the numerator is decreased by 2 and the denominator is increased by 1, then the denominator is eight times the numerator. The fraction is also written as{"mathml":"<math class="image_resized" style="width:24px;height:32px"><span style="font-family: . What is the value of m?


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a

6

b

10

c

9

d

15 

answer is A.

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Detailed Solution

Concept- Here by reading the question we get the idea of forming a linear equation of the given sum and solving it.
Let us consider the numerator as x and denominator as y.
According to the question
Case 1:
{"mathml":"<math class="image_resized" style="width:152px;height:40px"><span style="font-family:Case 2:
{"mathml":"<math class="image_resized" style="width:168px;height:40px"><span style="font-family:from(1)
{"mathml":"<math class="image_resized" style="width:120px;height:94px"><span style="font-family: From (1)
x=y43 Fraction= x y = 3 7  
According to question fraction is of the form m 14  
= 3 7 × 2 2 = 6 14 m 14 m=6 x=y43  
Therefore, fraction = x y = 3 7  
Hence, the correct answer is option 1.
 
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