Two persons A and B,walk round a circle whose diameter is 1 4km A walks at a speed of 165m per min and B walks at a speed of 110m per min. If they both start at the same time and point and walk in the same direction, at what interval of time would they be meeting at the same time
again?
Answers
Answered by
1
Answer:
Correct option is
B
1
3
1
h
Diameter of the circle =1.4cm
⇒ Circumference =2πr =2×
7
22
×
2
1.4
km=4.4km
A's speed =165m/min
∴ Time taken by A to travel 4.4 km (4400 m)=
165
4400
min=
3
80
min
B's speed = 110 m/ min
∴ Time taken by B's to travel 4.4 km (4400 m) =
110
4400
min=40min
Required interval of time = LCM of (
3
80
,40)
=
HCF(3,1)
LCM(80,40)
=
1
80
min=
60hrs
80
=1
3
1
hrs
Answered by
1
Answer:
Its 110km not 110m
HOPE IT HELPS YOU!!
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