Question

a walks at uniform rate of 4km an hour 4 hours after his start b cycles after him at 10kmph how far wil b catch a after d starting point

Answer 1

sum1 help

Answer 2

do u knw it

Answer 3

look at the units they might help.
A travels at 4 [km/hour] and A travels for 4 hours
So, aldren, how far does A travel total in that amount of time?

Answer 4

16

Answer 5

alright... great job there. So A traveled for 16 km.
Now, how long does it take for B to travel the same amount of distance?

Answer 6

160 mins

Answer 7

hhmmm you wouldn't get minutes. remember our problem is in hours so far

Answer 8

in 4 hrs a has gone a distance of 4*4=16km
now since they r moving in same direction their relative speed =10-4=6 km/hr
hence required time is 16/6 =8/3 =2 hr 40 mins
hence distance from starting point =16 + 10*8/3=16+80/3 =42.66 (appx) from starting point..

Answer 9

2hrs 40mins

Answer 10

kwo8 can u explain

Answer 11

matricked ur answer is wrong

Answer 12

i dint undrstand

Answer 13

velocity=distance/time
distance=time*velocity
The distance covered by a in t hours=The distance covered by b in t-4 hours
t*4=(t-4)*10
4t=10t-40
40=10t-4t
40=6t
40/6=t
d=40/6*4
=160/6
=26.67km
is it clear?

Answer 14

@aldren
may i know the ans ..

Answer 15

ur answer is perfect @matricked. Since the question is hw far we need to find the distance.