The least whole number which when subtracted from both the terms of the ratio 6 : 7 gives a ratio less than 16:21 is :

A 2
B 3
C 4
D 6

Correct Answer: 3

ধরি,ক্ষুদ্রতম সংখ্যা x বাদ দিলে ratio 16 : 21 এর সমান হয়। 6 - x / 7 - x = 16/21 112 - 16x = 126 - 21x 21x - 16x = 126 - 112 x = 14/5 x = 2.8 x এর মান যত বৃদ্ধি পাবে অনুপাত 16/21 এর চেয়ে তত ছোট হবে। ক্ষুদ্রতম পূর্ণ সংখ্যা x = 3
Bissoy MCQ
#গণিত #অনুপাত-সমানুপাত (Ratio-Proportion) #Janata Bank Ltd #Janata Bank Ltd - Executive Officer (Af) - 24.03.2017

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