Question
Person 'P' invested ₹4y at a simple interest rate of
35% per annum and ₹3y at a compound interest rate of 20% per annum (compounded annually), both for a duration of 2 years. The simple interest earned exceeds the compound interest by ₹3,700. Determine the total amount invested by 'P'.Solution
Simple interest = (Principal X time X rate) ÷ 100 = (4y X 2 X 35) ÷ 100 = Rs. '2.8y' CI = P X (1 + r/100)t - 1) , where 'P' is the sum invested, 'R' is the annual rate of interest and 'T' is the time period. CI = 3y X (1 + 20/100)2 - 1) Or, CI = 3y X [(1 + 0.2) 2 - 1] Or, CI =3y X [(1.2) 2 - 1] So, CI = 3y X 0.44 = Rs. '1.32y' ATQ, 2.8y - 1.32y = 3,700 Or, 1.48y = 3,700 So, 'y' = 2,500 Therefore, total sum invested by 'P' = 3y + 4y = 7y = 7 X 2,500 = Rs. 17,500
Which of the following is an example of a message-passing IPC mechanism?
Which among the following algorithms are used in Machine learning?
How can we set default rwx permission to all users on every file which is created on the current shell?
What does the following code do?
x = [1, 2, 3]
y = [4, 5, 6]
z = x + y
To change mode of myfile to 'rwxr–r–' , the command used is
Which layer of the OSI model deals with electrical, mechanical, and physical aspects of data transmission?
How is dynamic memory allocated in Java?
What CSS describes?
Which logic gate produces an output that is the logical sum of two or more inputs?
The attributes that do not exist in the physical database
Relevant for Exams:
