Question
A sum of money at certain rate of interest when
compounded annually becomes ₹625 in 3 years and ₹675 in 4 years. What is the rate of Interest per annum?Solution
Considering the 4-year investment, the sum at the end of the 3rd year i.e. Rs. 625 acts as the principal amount for the 4th year. We know that one year of compound interest is equivalent to one year of simple interest. Let the rate of interest be R%. According to the question, 625 + (625 × R × 1) ÷ 100 = 675 (625 × R × 1) ÷ 100=50 R =5000/625=8%.
18 men, working 8 hours a day, can complete a task in 21 days. If a woman is 33(1/3)% less efficient than a man, how much time will it take for 24 women...
Shivam and Harish can do a job alone in 90 days and 120 days respectively. Both work together and earn Rs. 5,250. Find Shivam’s earnings.
A2 type ‘P’ pipes can fill a tank in 450 hours, while B2 type ‘Q’ pipes can fill the same tank in 6...
‘A’ and ‘C’ together can dig a hole in 8 hours while ‘A’, ‘B’ and ‘C’ together can dig the same hole in 6 hours. Find the time taken...
A and B can complete a work together in 24 days. If A alone can complete one-fourth of the work in ‘x’ days and remaining work is completed ...
P alone can finish a piece of work ‘M’ in 6 days while Q takes 3 days to finish it alone. P, Q and R working together can finish the work ‘N’ wh...
Pawan, Bittu, and Raju can individually complete a task in 36 days, 60 days, and 30 days, respectively. They all begin working together, but Raju stops ...
- A man can complete a job alone in 20 days. A woman can complete half of the same job in 15 days. If both work together, how many days will it take them to ...
A takes twice as much time as B and thrice as much time as C to finalize a task. Working together, they can complete the task in 8 days. The time (in da...
- ‘A’ can complete a job in 36 days. ‘B’ takes 3 times as long as ‘A’ to finish the same job. If both work together, how much of the work will th...
Relevant for Exams:
