Question
Find the approx. compound interest on Rs. 5000 at 4% per
annum for 2 years compounded half yearly?Solution
Principal = Rs. 5,000 Rate = 4% = 4/2 = 2% half yearly Time = 2 years Time will double = 2 × 2 = 4 years CI = P(1+r/t)n-P = 5000(1+2/100)4-5000 = 5000(1+1/50)4-5000 = 5000 × 51/50 × 51/50 × 51/50 × 51/50 - 5000 = 5412.16 - 5000 = Rs. 412.16 =Rs. 412 (approx. )
Ravi and Rekha, alone can complete a work in 25 days and 50 days, respectively. They started the work together and left after 10 days such that the rema...
A alone can finish a piece of work in 10 days and B alone can finish it in 15 days. They work together for 3 days and the remaining work is finished by ...
P, Q & R can finish a work in 10 days, 15 days, and 20 days, respectively, working alone. P and Q work on the first day, P and R work on the second day,...
(x + 6) workers complete 40% of a job in 8 days by working 5 hours/day. The remaining work is done by (x + 2) workers in 16 days working 5 hours/day. Fi...
Amin, Basha and Cheez can do a piece of work in 90, 40 and 12 days respectively. But they decide. That a single person will work in a day and receive Rs...
138 unit of work can be completed by P alone in 23 days. P started working alone and joined by Q after 11 days such that they completed the remaining wo...
- Two workers, A and B, can finish a task in 36 days and 48 days respectively, working alone. How many days will they take to complete the work together?
- Pipes X and Y can fill a tank in 45 minutes and 60 minutes respectively. Another pipe Z can empty the tank in 1 hour 30 minutes. If X and Z are opened firs...
8 men working 6 hours a day can complete a piece of work in 6 days. If efficiency of each woman is 20% more than that of each man, then how many women w...
- Alok finishes 60% of a project in 30 days, while Neha finishes 20% of the same in 15 days. Alok worked for 25 days and then stopped. Find the time taken by...
