Question
The ratio of the speed of the boat in upstream to that
of in downstream is 4:7, respectively. If the speed of the current is 9 km/h, then find the speed of the boat in still water.Solution
According to the question: Let the speed of the boat in still water = x km/h Speed of the boat downstream = (x+9) km/h Speed of the boat upstream = (x−9) km/h According to the question, 
There are five members T, U, V, W, and Y in the family. V is married to Y. T’s mother is daughter of U. W and T are male members. Y is brother of W. H...
Answer the questions based on the information given below.
Seven persons (S, T, U, V, W, Y and Z) belong to a family of three generations. No s...
E is the son of A. D is the son of B. E is married to C. C is B’s daughter. How is D related to E?
How many male members are in the family?
How is R related to S?
Who among the following is the mother of M?
If T is female then how T related to Z?
F's brother H, is the grandfather of J's son. How is H related to J if J has no siblings?
How I related to F?
How is P related to O?
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