allery180 km ଯାତ୍ରାରେ 3.5 h ଲାଗେ: 30 km/h ବେଗରେ 60 km ଏବଂ 60 km/h ବେଗରେ 60 km। ଶେଷ ଅଂଶର ବେଗ କେତେ?
A150 km/h
B120 km/h
C90 km/h
D100 km/h
Answer & Solution
Correct answer: B. 120 km/h
ପ୍ରଥମ ଦୁଇ ପର୍ଯ୍ୟାୟରେ 2 + 1 = 3 ଘଣ୍ଟା ଲାଗେ; ଅବଶିଷ୍ଟ 60 km ପାଇଁ 0.5 ଘଣ୍ଟା ରହେ, ତେଣୁ ବେଗ 60 ÷ 0.5 = 120 km/h।
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