Surekha travels 10 km to reach her office . she walks 0.5 km on foot at a speed of 8 km ph to catch her chartered bus which travels of a speed of 40 kmph.time taken by her to reach the office is:
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D = total distance traveled by surekha to reach office = 10 km
d₁ = distance traveled by surekha by walk = 0.5 km
v₁ = speed of walking of surekha = 8 km/h
t₁ = time taken by surekha to walk
time taken by surekha to walk is given as
t₁ = d₁ /v₁ = 0.5/8 = 0.0625 h
d₂ = distance traveled by surekha by bus = D - d₁ = 10 - 0.5 = 9.5 km
v₂ = speed of bus = 40 km/h
t₂ = time taken by surekha by bus
time taken by surekha by bus is given as
t₂ = d₂ /v₂= 9.5/40 = 0.2375 h
Total time taken to reach the office is given as
t = t₁ + t₂ = 0.0625 + 0.2375
t = 0.3 hours
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