An athlete can jog at twice her walking pace. By walking for a total of 1h 40 min and jogging for a total of 30 minutes she covers a distance of 16km. What is her walking pace in kilometeres per hour (kph)?

1 Answer
Feb 17, 2018

Let her walking pace be#=x\ kph#
#:.# Jogging pace#=2x \ kph#

Distance covered while walking#=x xx(1+40/60)=5/3x\ km#
Distance covered while jogging#=2x xx(30/60)=x\ km#

Total distance covered#=5/3x+x=8/3x\ km#

Imposing given condition

#8/3x=16#
#=>x=16xx3/8=6\ kph#