allery6 km/h ବେଗ କମିଯାଇଥିବା ଏକ ଟ୍ରକ୍ ଏକ 72 km ରାସ୍ତାରେ 1 hour ଅଧିକ ସମୟ ନିଏ। ଏହାର ପ୍ରକୃତ ବେଗ କେତେ ଥିଲା?
A20 km/h
B24 km/h
C30 km/h
D36 km/h
Answer & Solution
Correct answer: B. 24 km/h
72/(s-6) - 72/s = 1 ରୁ s(s-6) = 432 ମିଳେ, ତେଣୁ s = 24 km/h।
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