Ashifur August 8, 2023 - 14:32
Problem: ক ও খ এর বয়সের অনুপাত ৪:৭ । তাদের বয়সের অস্তর ১৫ বছর হলে, ক এবং খ এর বয়স কত?

View all: BANGLADESH BANK BANKERS(AD) | WRITTEN QUESTION (MATH) SOLVE | 1990

Correct Answer: উত্তরঃ ক এর বয়স ২০ বছর, খ এর বয়স ৩৫ বছর ।

Explanation:

ক এর বয়স : খ এর বয়স ৪:৭

তাদের বয়সের অনুপাতের পার্থক্য ৭ -৪ =৩

বয়সের পার্থক্য ৩ হলে ক এর বয়স = ৪ বছর

বয়সের পার্থক্য ১৫ হলে ক এর বয়স $\frac{৪\times ১৫}{৩}$=20 বছর

বয়সের পার্থক্য ৩ হলে খ এর বয়স =৭ বছর

বয়সের পার্থক্য ১৫ হলে খ এর বয়স =$\frac{৭\times ১৫}{৩}$ =৩৫ বছর

SO,ক এর বয়স ২০ বছর, খ এর বয়স ৩৫ বছর ।

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