Subject
Govt.Jobs
Topic
বিসিআইসি (সহকারী ব্যাবস্থাপকঃ প্রশাসন) - ১৩.০৫.২০২২
The denominator of a certain fraction is two more than three times the numerator .If 7 were added to both the numerator and deminator of the fraction ,the new fraction would be equivalent to 3/5 .Which of the following is equivalent to the original fraction ?
The denominator of a certain fraction is two more than three times the numerator .If 7 were added to both the numerator and deminator of the fraction ,the new fraction would be equivalent to 3/5 .Which of the following is equivalent to the original fraction ?
ক)
1/4খ)
2/8গ)
3/11ঘ)
5/17Explanation
মনে করি ,ভগ্নাংশটির লব =x এবং " হর =y অতএব , ভগ্নাংশটি =x/y প্রশ্নমতে ,y-2=3x বা, y =3x+2......(i) এবং (x+7)/(y+7)=3/5 বা, 5x+35=3y+21 বা, 5x-3y=-35+21 বা,5x-3y=-14 বা, 5x-3(3x+2)=-14 বা, 5x-9x-6 =-14 বা,-4x=-14+6 বা,-4x=-8 বা,x=2 অতএব,(i) y=3.2+2 =8 অতএব ,ভগ্নাংশটি =2/8Related questions
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