Question
A principal amount is invested at an annual compound
interest rate of y%. After 2 years, the investment grows to Rs. 7200, and after 4 years, it reaches Rs. 10368. Determine the value of 'y'.Solution
Let the sum invested = Rs. K We have, K X {1 + (y/100)}2 = 7200 And, K X {1 + (y/100)}4 = 10368 So, 10368 ÷ 7200 = [K X {1 + (y/100)}4] ÷ [K X {1 + (y/100)}2] Or, 1.44 = {1 + (y/100)}2] = {(100 + y)/100}2 Or, {(100 + y)/100} = √1.44 = 1.2 Or, 100 + y = 120 So, y = 20 Hence, option a.
By what percent the number of voters voting in Haryana is less than that of voters voting in Gujarat?
Find the difference between total number of print of Printer E and the number of color print of Printer D.
What was the respective ratio between total numbers of Bikes distributed Honda Company and the total number of Bikes distributed by Bajaj Company?
...Total number of subscribers of channel F is 20% less than the total number of subscribers of channels A. Find the total number of subscribers of channel...
If the selling price of a red pen, a blue pen and a black pen is Rs.20, Rs.15 and Rs.25 respectively, then find the total revenue generated by shopkeepe...
If the average number of unsold items by company 'B' and 'D', together, who were presented in a competition is 'a', then find the value of 90% of 'a'.
In wing D people who have taken subscription of OTT Platform P are 25% more than that of wing F people. Number of people having other OTT platform is sa...
Find the difference between the total number of literate population in Kalgaon and the total number of illiterate population in Hirapur.
What is the average of total expenditure in all the years together?
Find the average number of chocolates distributed in class IV, V and VI together.
Relevant for Exams:
