Ashifur August 8, 2023 - 14:35
Problem: One-fifth of the products made by a company is defective. Four-fifth of the defectives were rejected and one-twentieth of the products were rejected by mistake. What percent of the products sold by the company is defective?

View all: BANGLASESH BANK (BB) | ASSISTANT DIRECTOR (AD) | WRITTEN QUESTION SOLVE(MATH) | 2001

Correct Answer: ত্রুটিপূর্ণ পণ্য বিক্রয় হয় ৫% ।

Explanation:

ত্রুটিপূর্ণ পণ্য = $\frac{১}{৫}$ অংশ

ভাল পণ্য = ১- $\frac{১}{৫}$ = $\frac{৪}{৫}$ অংশ

ভাল পণ্য ভুলের কারনে বাদ যায় = $\frac{৪}{৫}$ এর $\frac{১}{২০}$ অংশ= $\frac{১}{২৫}$

ত্রুটিপূর্ণ পণ্য বাদ যায় = $\frac{১}{৫}$ এর $\frac{৪}{৫}$ অংশ= $\frac{৪}{২৫}$ অংশ

ত্রুটিপূর্ণ পণ্য বিক্রি হয় = $\frac{১}{৫}$ – $\frac{৪}{২৫}$ অংশ= $\frac{১}{২৫}$

মোট বাদ যায় $\frac{১}{২৫}$+$\frac{৪}{২৫}$ =$\frac{১}{৫}$ অংশ

$\frac{৪}{৫}$অংশ বিক্রয় হলে ত্রুটিপূর্ণ পণ্য বিক্রয় হয় = $\frac{১}{২৫}$ অংশ

১ অংশ বিক্রয় হলে ত্রুটিপূর্ণ পণ্য বিক্রয় হয় = $\frac{১ x৫}{২৫x ৪}$ অংশ

১০০ অংশ বিক্রয় হলে ত্রুটিপূর্ণ পণ্য বিক্রয় হয় =$\frac{১ x৫ x ১০০}{২৫x ৪}$ অংশ

=৫ অংশ

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