alleryA B-তকৈ দুগুণ দ্ৰুত। একেলগে কাম কৰি তেওঁলোকে এটা কাম 8 days-ত শেষ কৰে। A-ক অকলে প্ৰয়োজন হ'ব:
A10 days
B16 days
C24 days
D12 days
Answer & Solution
Correct answer: D. 12 days
1. যদি B-য়ে দৈনিক এক unit কৰে, A-য়ে দৈনিক দুই units কৰে।
2. একেলগে তেওঁলোকে দৈনিক 3 units কৰে।
3. 8 days-ত তেওঁলোকে কামটো শেষ কৰে, গতিকে সমগ্ৰ কামটো হ'ল 3 x 8 = 24 units।
4. A-য়ে অকলে দৈনিক 2 units কৰে, গতিকে A-ক 24 / 2 = 12 days প্ৰয়োজন।
5. পৰীক্ষা হিচাপে, B-ক অকলে 24 days প্ৰয়োজন হ'ব, যিটো A-ৰ সময়ৰ দুগুণ, ঠিক যেনেদৰে উল্লেখ কৰা হৈছে।
_Source: syllabus Maths, Ch 11 'Direct and Inverse Proportions', S11.3 Inverse Proportion_
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