Practicing Success
Ajay takes 4 hours more while swimming upstream than downstream. His speed in still water is 10 km/hr. The speed of stream is 2 km/hr. What is the distance?
|
96 km 20 km 80 km 72 km |
96 km |
Speed of Ajay in still water i.e. x = 10 km/hr Speed of stream i.e. y = 2 km/hr Upstream speed i.e. x - y = 8 km/hr Downstream speed i.e. x + y = 12 km/hr Time = \(\frac{Distance }{ Speed}\) \(\frac{x }{ 8}\) - \(\frac{x }{ 12}\) = 4 \(\frac{x }{ 24}\) = 4 x = 96 km |