Question
Vishwas has Rs. 3600. He gives this money to Manoj on
simple interest and after 4 years received the double amount. If the interest rate is 5% more than the previous, in how many years this amount will be doubled?Solution
S.I = P x R x T/100 3600 = (3600 x r x 4)/100 r = 25% p.a New rate = 25 + 5 = 30% 3600 = 3600 x 30% x t t = 3(1/3) years
More Simple and compound interest Questions
- The product of two decimals is 0.675. If one of the decimals is 2.5, then find the other decimal.
- In a school election between two contestant’s 'A' and 'B', 'A' secured 62% of the total votes and won by 7,440 votes. Find how many votes 'B' got.?
- Anita had 320 candies and Rina had 40 more candies than Anita. Anita gave away 25% of her candies while Rina gave away 35% of hers. How many more/less cand...
- Four lights blink at intervals of 18 seconds, 24 seconds, 36 seconds, and 48 seconds respectively. How many times will all the lights blink together in 3 h...
- 10 dogs can finish 20 trays of food in 25 hours. How long will it take 5 dogs to consume 16 trays of food?
- Which of the following numbers is not a perfect square?
- Sneha cycles to her tuition class at a speed of 20 km/h and ends up reaching 3 hours late. Had she pedalled at 25 km/h, she would have reached exactly on t...
A boat can travel 24 km upstream and 30 km downstream in 4 hours. Find the speed of the boat in still water if the speed of the stream is 3 km/h.
- The average age of 3 brothers is 24 years. If their ages are in the ratio 5:6:7, what is the age of the eldest brother?
The difference between the interior and exterior angles of a vertex of a regular polygon is 140°. The number of sides of the polygon is