alleryଏକ ଯାନ ଏକ 10 km ରାସ୍ତାର ଦୁଇ-ପଞ୍ଚମାଂଶ 20 km/h ବେଗରେ ଏବଂ ଅବଶିଷ୍ଟ ଅଂଶ 30 km/h ବେଗରେ ଅତିକ୍ରମ କରେ। ହାରାହାରି ବେଗ କେତେ?
A25 km/h
B26 km/h
C28 km/h
D24 km/h
Answer & Solution
Correct answer: A. 25 km/h
20 ବେଗରେ 4 km ପାଇଁ 0.2 h ଏବଂ 30 ବେଗରେ 6 km ପାଇଁ 0.2 h ଲାଗେ, ତେଣୁ 0.4 h ରେ 10 km ହେଉଛି 25 km/h।
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