d Word Problem 2 | Job Exam Rare Mathematics (JEMrare) - Solved MCQs

Word Problem 2

Problem 2: On an investment interest at rate of 4% for 8 months term is Rs 129 less than the interest on the same amount at rate of 5% for 15 months. What is the value of investment (principal amount) ?


simple arithmetic questions and answers

In the First Case;

R1=4,  T1 = 8/12

I1= \frac{P1\times R1\times T1}{100}

I1= \frac{y\times 4\times \frac{8}{12}}{100}

I1= \frac{8y}{300}

In the 2nd Case;

R2 =5,  T2= 15/12

I2= \frac{P2\times R2\times T2}{100}

I2= \frac{y\times 5\times \frac{15}{12}}{100}

I2= \frac{75y}{1200}

According to condition of question;


\Rightarrow \frac{75y}{1200} -\frac{8y}{300}= 129

\Rightarrow \frac{75y-32y}{1200} = 129

\Rightarrow \frac{43y}{1200} = 129

\Rightarrow y =\frac{129\times 1200}{43}

\Rightarrow y =3600

So, the principal amount was Rs 3600

You may submit a MCQ or maths problem with solution tips here in the comment box below! If you could not solve anyone, you may submit a MCQ or maths problem without solution as well. We will try our level best to solve it for you!

Your email address will not be published.

You may use these <abbr title="HyperText Markup Language">HTML</abbr> tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>