C-03-Q198mediumsingle_mcq

Some principal becomes Tk 460 in 3 yr and Tk 600 in 5 yr at simple profit. Rate?

a $28\%$
b $14\%$
c $7\%$
d $20\%$

ব্যাখ্যা

Between years 3 and 5 the amount grows by $600 - 460 = 140$ , i.e. Tk 70 of interest per year. Subtracting 3 years' interest from Tk 460 gives principal $460 - 210 = 250$ , so the rate is $\dfrac{70}{250}\times100 = 28\%$ .

এই অধ্যায়ের আরও প্রশ্ন

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Algebraic Expressions — সব প্রশ্ন দেখুন (219টি) →

Some principal becomes Tk 460 in 3 yr and Tk 600 in 5 yr at simple profit. Rate?

28\%

14\%

7\%

20\%