Ashifur September 9, 2023 - 18:18
Problem: ৩০০ টাকার ৪ বছরের সরল মুনাফা ও ৪০০ টাকার ৫ বছরের সরল মুনাফা একত্রে ১৪৮ টাকা হলে, শতকরা মুনাফার হার কত?

View all: KARMASANGSTANT BANK LTD (DEO) WRITTEN QUESTION (MATH) SOLVE | 2018

Correct Answer: 4.625

Explanation:

আমরা জানি, I = $\frac{Prn}{100}$

$\frac{300\times r\times 4}{100}+\frac{400\times r\times 5}{100}$ = 148

=> 12r+20r = 148

=> 32r = 148

so, $\frac{148}{32}$ = 4.625

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