Speed of downstream = D/T = 45 × (60/50) = 54 km/hr The ratio of the speed of the boat in still water to the speed of the stream = 5: 4 (5x, 4x) => 9x = 54 => x = 6 Speed of upstream = 5x – 4x = x = 6 km/hr Distance = 22 km Time = D/S = 22/6 = 3(2/3) hr = 3 hour 40 min
The cost of a machine is ?18,000 and it depreciates at 16(2/3)% annually. Its value after 2 years will be
A can do a piece of work in 20 days and B can do it in 30 days. How long will they take to do the work together?
The speed of motorboat in still water is 34 km/hr. It takes 6 hours to go 120 km upstream. Find the time taken by the motorboat to return the same dista...
A can do a piece of work in 8 days and B can do the same piece of work in 12 days. A and B together complete the same piece of work and get ?200 as the...
Find the LCM of pair of the following polynomials x4 – 27a3 x, (x-3a)², whose GCD is (x-3a)
Find the missing number
2, 4, 12, 48, 240, .....
If Karkuzhali earns ₹ 1,800 in 15 days, then she earns ₹3,000 in ___________days.
If 18 men working 18 hours a day can make 18 quilts in 18 days, then in how many days 27 men working 12 hours per day will make 27 quilts?
Select the number from the given options which will come in place of the question mark (?) in the following series.
6, 12, 14, 28, 30, 60, ?
Find the difference between Simple Interest and Compound Interest for a sum of ₹ 8,000 lent at 10% per annum in 2 years.
