d Question 27 | Job Exam Rare Mathematics (JEMrare) - Solved MCQs
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Question 27

Question 27: A man borrowed money at rate of 12 percent p.a. simple interest from a bank. He only had to pay Rs. 5400 in liue of interest for the period after 3 years term. What was the principal amount of loan ?

a. 6000                                   b. 15000                                     c. 13000

Federal Public Service Commission AD IB 2nd Batch 2017

Solution.

Let the principal amount or the initial amount of  loan be ‘x’;

We have been given,

R = 12 % pa

T = 3 years

I= 5400

I= \frac{P\times R\times T}{100}

Put values;

5400= \frac{x\times 12\times 3}{100}

x= \frac{540000}{12\times 3}

x= 15000

So, the borrowed amount is Rs 15000

 

Question 28: Two number are 20% and 50% respectively more bigger than a third number. The ratio between the two numbers is ?

a. 2:5                               b. 3:5                                 c. 4:5

FPSC Assistant Director IB 2nd Batch 2017

Solution.

 

Let the numbers be ‘x’, ‘y’, and ‘z’;

By condition first number ‘x’ is 20 % more than third number ‘z’;

x= z+\frac{20}{100}z

And 2nd number ‘y’ is 50 % more than third number ‘z’;

y= z+\frac{50}{100}z

now ;

x :y

\Rightarrow z+\frac{20}{100}z:z+\frac{50}{100}z

\Rightarrow \frac{20}{100}z:\frac{50}{100}z

\Rightarrow 20z:50z

\Rightarrow 20:50,

\Rightarrow 2:5

So, the ration between x and y is 2:5

 

 

 

 

 

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