Question

a boy leaves his house at 9:30 a.m. for school the school is 2 kilometre away and classes start at 10 a.m if he walks at a speed of 3 km per hour for the first kilometre at what speed should we walk the second kilometre to reach just in time

Answer 1

Hey

distance=2km total

time = 30 min =0.5hr

u(intail speed )=3km/h for 1st 1km

Hence time taken = distance/speed=1/3h


Time left =0.5-1.3=0.5/3h

Distance left =1km


Hence speed at which he should walk the 2nd km would be 1/0.5/3=6km/h


I hope its help you
mark brainliest