If a man's rate with the current is 15 km/hr and the rate of the current is 11⁄2 km/hr, then his rate against the current is	Choose the correct choice from the following options
A) 12 km/hr
B) 22 km/hr
C) 23 km/hr
D) 28 km/hr
E) 13 km/hr
Speed downstream = 15 km/hr   Rate of the current= 11⁄2 km/hr   Speed in still water = 15 - 11⁄2 = 131⁄2 km/hr   Rate against the current = 131⁄2 km/hr - 11⁄2 = 12 km/hr   12 km/hrnswer is 12 km/hr
<result>A</result>
If a man's rate with the current is 15 km/hr and the rate of the current is 11⁄2 km/hr, then his rate against the current is