Question

a man speed with the current is 15km/hr and the speed of the current is 2.5km/hr the man's speed against the current

Answer 1

Find the man's speed:

Man's speed with the current = 15 km/h

Speed of the current = 2.5 km/h

Man's speed = 15 - 2.5 = 12.5 km/h

Find the man's speed against the current:

Man's speed = 12.5 km/h

Speed of the current = 2.5 km/h

Man's speed against the current = 12.5 - 2.5 = 10 km/h

Answer: The man's speed against the current is 10 km/h

Answer 2

let the normal speed of man be 'x' and spend of current be 'y'

x + y = 15km/ hr

speed of current y = 2.5km/ hr

x + 2.5 = 15 => x = 12.5km/ hr

man's normal speed x = 12.5km/ hr

man's speed against the current

=( x - y) km/ hr

= (12.5 - 2.5) km/hr = 10km /hr

Answer:
_______
man's speed against the current

= 10km/ hr