Question
Rs. (4x + 200) is invested at a simple interest rate of 18% per annum, earning an interest of Rs. 2160 after 4 years. Calculate the interest earned when Rs. (5x - 100) is invested at the same rate for the same period.
Simplify to find x=700. New Principal: Substitute x=700 into 5x−100: 5(700)−100=3400 Calculate New Interest: Use the simple interest formula again 
The interest earned on Rs. 3400 is Rs. 2448.More Simple and compound interest Questions
- Raju invested a certain sum at 25% p.a. compound interest, compounded annually, and earned an interest of Rs. 2925 in 2 years. What will be the interest wh...
- A man invested Rs. ‘x’ in Plan A and Rs. ‘x/2’ in Plan B. Plan A offers 4% p.a. and Plan B offers 7% p.a. simple interest. If after 3 years, the total inte...
- ‘M’ invested Rs. 3600 for (t + 6) months, while ‘N’ invested Rs. 900 more than ‘M’ for (t - 1) months, in a business. If profit received by ‘N’ out of tota...
- A man invested a certain amount of sum at 12.5% per annum simple interest and earned an interest of Rs.2100 after 3 years. If the same amount is invested a...
- Raj invested Rs. ‘5y’ in scheme ‘C’ offering simple interest of 20% p.a. and reinvested the interest earned from scheme ‘C’ at the end of 3 years in scheme...
- A sum of money becomes three times itself in 12 years at simple interest. What is the rate of interest?
- At what rate percent per annum will a sum of Rs 5000 amount to Rs 5750 in 3 years at simple interest?
- Rs. 2500 is invested in scheme ‘A’ for a year at simple interest of 25% p.a. The interest received from scheme ‘A’ is reinvested for 2 years in scheme ‘B’ ...
- The interest received by investing Rs. 3000 for 2 years at compound interest of 20% p.a., compounded annually, was re-invested for 3 years at simple intere...
- An individual invests ₹1,200 at a simple interest rate of 5% per annum. After 2 years, they add ₹800 to the investment, and the total amount remains invest...
Relevant for Exams:
Hey! Ask a query
Please enter email id
The email must be a valid email address.
Please enter Mobile Number
Please enter valid Mobile Number
Please enter your Doubt
