allery40 km/h ବେଗରେ ଯାତ୍ରା 1 h ବିଳମ୍ବରେ ସରେ; 60 km/h ରେ 1 h ଆଗରୁ ସରେ। ନିର୍ଦ୍ଧାରିତ ଯାତ୍ରା ସମୟ କେତେ?
A6 ଘଣ୍ଟା |
B5 ଘଣ୍ଟା |
C3 ଘଣ୍ଟା |
D4 ଘଣ୍ଟା |
Answer & Solution
Correct answer: B. 5 ଘଣ୍ଟା |
ଦୂରତା ପାଇଁ, d/40 − d/60 = 2 d = 240 କିଲୋମିଟର ଦେଇଥାଏ, ତେଣୁ ନିର୍ଧାରିତ ଅବଧି 240 ÷ 40 − 1 = 5 ଘଣ୍ଟା |
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