Ashifur August 8, 2023 - 14:38
Problem: একই হারে সরল সুদে ৬৫০ টাকার ৩ বছরের সুদ এবং ৪০০ টাকার ৮ বছরের সুদ একত্রে ৩৬০.৫০ টাকা হলে, শতকরা বার্ষিক সুদের হার কত?

View all: PUBALI BANK LTD. | JUNIOUR OFFICER | WRITTEN EXAM SOLVE(MATH) | 2000

Correct Answer: ৭ %

Explanation:

মনেকরি, সুদের হার = ক%

ক% হার সুদে,

১০০ টাকার ১ বছরের সুদ = ক টাকা

৬৫০ টাকার ৩ বছরের সুদ = $\frac{ক x ৬৫০ x ৩}{১০০} = \frac{৩৯ক}{২}$ টাকা

অপরদিকে,১০০ টাকার ১ বছরের সুদ = ক টাকা

৪০০ টাকার ৮ বছরের সুদ = $\frac{ক x ৪০০ x ৮}{১০০}$ = ৩২ক টাকা

প্রশ্নমমতে,৩২ক + $\frac{৩৯ক}{২}$ = ৩৬০.৫০=> ক= ৭

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