Question
A boat goes 50 km in upstream in 5 hours and takes 3
hours to complete a distance of 18 km in downstream. Find the speed of boat in still water.Solution
Speed of boat in still water = (D + U)/2 Upstream speed (U) = 50/5 = 10 km/hr Downstream speed (D) = 18/3 = 6 km/hr Speed of boat in still water = (10 + 6)/2 = 16/2 = 8 km/hr
Six persons P, Q, R, S, T and U are of different ages. S is older than only T and R. Q is older than P but younger than U. R is not the youngest. The ag...
How many persons are shorter than U?
E, F, G, H and I are five sisters. G is younger than only two sisters. F is older than E but younger than G. I is not the oldest. Who is the oldest?
There are five cars T, Y, U, I and O of different heights. Car Y is shorter than only one car. Cars U and I are shorter than Car T, which is not the tal...
Six friends P, Q, R, S, T and U participated in a quiz competition. U score more than Q but less than R. T scores more than R but he does not score the ...
How many persons have secured more marks than J?
What can be the possible price of laptop G and D?
Who among the following has maximum laptops?
Six students L, M, N, O, P, and Q scored different marks in an exam. O scored more than Q and L. Three students scored more than P, who scored just mor...
H is taller than I. J is taller than K but shorter than L. I is shorter than K and K is taller than H. Who is the tallest person?Â
