The ratio of denominator to numerator of a fraction is 3:2. The fraction formed by subtracting 6 from the numerator is 2/3 of the given fraction. Find the numerator of the fraction.

A 9

B 16

C 18

D 24

Solution

Correct Answer: Option C

ধরি, ভগ্নাংশটি হল x/y, যেখানে y হল হর এবং x হল লব।

প্রশ্ন অনুযায়ী, হর:লব = 3:2, অর্থাৎ y:x = 3:2
এর মানে y = (3/2)x

আবার, (x-6)/y = (2/3)(x/y)
⟹ (x-6)/y = (2/3) × (x/y)
⟹ (x-6)/y = (2x)/(3y)
⟹ 3(x-6) = 2x
⟹ 3x - 18 = 2x
⟹ 3x - 2x = 18
⟹ x = 18

সুতরাং, ভগ্নাংশের লব হল 18।

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