An employee , travelling at 20 km/h , reaches his office half -an -hour late than the time he would take while travelling at 25 km/h . Find the distance between his house and the office .
please give detailed information.
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Answer:
. Two congruent triangles have the same area and perimeter. All the sides and angles of a triangle are equal to the corresponding sides and angles of its congruent triangle.
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Step-by-step explanation:
speed= distance/ time
so time = distance / speed
t= d/s
now
so from given condition
- (d/20)-(d/25)= .5
- d{1/20-1/25}=1/2
- d= (20×25)/(25-20)×2
- d= 20×25/10
- d= 50km
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