Let the speed of the boat in still water be x km/h, and the speed of the stream be y km/h. Downstream speed = (x + y) km/h, and upstream speed = (x - y) km/h. Downstream: 40 / (x + y) = 5 Upstream: 40 / (x - y) = 8 From the downstream equation: x + y = 40 / 5 = 8. From the upstream equation: x - y = 40 / 8 = 5. Now solve: x + y = 8 x - y = 5 Adding both equations: 2x = 13 x = 6.5 km/h Thus, the speed of the boat in still water is 6.5 km/h.
Statements:
All fruits are nuts
All nuts are vegetables
Conclusion:
I. Some vegetables are nuts
II. Some v...
If point F comes exactly between points Y and Z, then find the distance between F and M?
Ashish leaves his house at 20 minutes to seven in the morning, reaches Kunal’s house in 25 minutes, they finish their breakfast in another 15 minutes ...
What is the shortest distance between points B and A?
What is the shortest distance between Point P and Point O?
Rohit eats more than Ankit, Shubham eats less than Prabhu but more than Ankit. Rohit eats less than Shubham. Who eats the most in the group?
P # Q * C %W * U then find the distance between P and C?
A person starts from a point P and travels 5 km eastwards to Q and then turns left and travels thrice that distance to reach R. He again turns left and ...
Rakhi moved a distance of 65 metres towards the north. She then turned to the left and walked for about 35 metres, turned left again and walked 80 metre...
P is in which direction with respect to B?
