alleryଏକ ଡଙ୍ଗା ସ୍ଥିର ଜଳରେ 12 km/h ବେଗରେ ଗତି କରେ ଏବଂ ସ୍ରୋତର ବେଗ 3 km/h। ସ୍ରୋତର ଅନୁକୂଳରେ ଏହାର ବେଗ କେତେ?
A9 km/h
B15 km/h
C18 km/h
D12 km/h
Answer & Solution
Correct answer: B. 15 km/h
ସ୍ରୋତର ଅନୁକୂଳରେ ସ୍ରୋତ ସାହାଯ୍ୟ କରେ, 12 + 3 = 15 km/h।
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