mahesh walked from town A to town B in 6 hours. on his return journey, he increased his average speed by 1km/h and covered the distance in 5 hours find the distance between the two towns
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Answer:
30 km
Step-by-step explanation:
Mahesh walked from Town A to Town B in 6 hours.
Let his average speed be x.
Let distance be y.
By speed formula,
=> Speed = Distance/Time
=> x = y/6
=> 6x = y________________(1)
When he increase his speed by 1km/h then,
=> x + 1 = y/5
=> 5x + 5 = y_______________(2)
From 1 and 2 equations,
6x + 0 = y
5x + 5 = y
Multiply 1st equation by 5 and 2nd by 6.
Then,
30x + 0 = 5y
- 30x + 30 = 6y
- 30 = - y
y = 30km
d = 6s = 6*5 = 30 km
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