A sum of money amounts to Rs 1024 in 4 years and Rs 1458 in 7 years at a compound rate of interest. What is the rate of interest per annum?
For 3 years, taking cube rootsFor 3 years, taking cube roots = ∛512 = 8 = ∛729 = 9 Rate of interest = (difference of amount)/(first amount)× 100 = (9 - 8)/8 × 100 = 12.5% per annum
A and B together can complete a piece of work in 35 days while A alone can complete 50% of the work in 20 days. Find the time taken by B to complete 12....
A trip from Mumbai to Pune takes 4 hours 30 minutes at a speed of 60 km/hr. How long (in hours) will it take to complete, if the speed is 15m/sec?
A, B and C can do a work in 8, 16 and 24 days respectively. They all begin together. A continues to work till it is finished, C leaving off 2 days and B...
A can finish the work in 40 days and B in 30 days. They both work together for 5 days and then B leaves. How many days will A take to complete the remai...
A, B and C can individually complete a piece of work in 24 days, 15 days and 12 days,respectively. B and C started the work and worked for 3 days and le...
A car is moving at a uniform speed of 35 km/h. What is the time it takes to cover 140 km?
A person from the top of a hill observes a vehicle moving towards him at a uniform speed. It takes 10 minutes for the angle of depression to change from...
An elephant can do a work as fast as two horses ‘A’ and ‘B’ can do it by working together. If horse ‘A’ alone can co...
A can do a piece of work in 15 days while B can do it in 18 days. Starting with A, they work on alternate days till the work gets over. How many days i...
A man on the top of a tower, standing on the sea-shore, finds that a boat coming towards him takes 10 minutes for the angle of depression to change fro...
