Two friends are at a distance of 72km . They start at the same time to meet each other and walk at the rates of 7 km and 5 km per hour respectively. In what time will they meet?
Answers
Answered by
2
They covered the distance in this way together in different hours.
6+6.5+7+7.5+8+8.5+9+9.5+10 = 72 Means,they'll meet at the 9thhr.
So,In that time A will cover = 4*9 = 36km.
They will meet in Midway.
6+6.5+7+7.5+8+8.5+9+9.5+10 = 72 Means,they'll meet at the 9thhr.
So,In that time A will cover = 4*9 = 36km.
They will meet in Midway.
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Answered by
3
Answer:
distance=72km
Step-by-step explanation:
let speed of 1st friend be 7km/h,And 2nd friends be 5km/h...
A/Q
In 1 hour 1st friend cover 7km
in 1st hour 2nd friend cover 5km
similarly,
In 6th hours 1st friend cover= (7.6)km=42km
In 6th hours 2nd friends cover=(5.6)=30km
Therefore
Both cover(42+30) in 6th hours.
so, they will meet in 6 hours.
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