a man is walking at a speed of 10 km per hour . after every kilometre , he takes rest for 7 minutes . how much time will be take to cover a distance of 7 kilometres ?
"rest time = number of rest ã — time for each rest = 6 ã — 7 = 42 minutes total time to cover 7 km = ( 7 â  „ 10 ã — 60 ) minutes + 42 minutes = 84 minutes answer c"
add(multiply(divide(7, 10), speed(const_60, const_1)), multiply(const_4, 7))