alleryꯀꯥ ꯑꯃꯒꯤ ꯈꯣꯡꯖꯦꯜ ꯑꯁꯤ 5 km/h ꯍꯦꯅꯒꯠꯍꯅꯕꯅꯥ ꯃꯁꯤꯅꯥ 60 ꯀꯤꯂꯣꯃꯤꯇꯔꯒꯤ ꯂꯝꯕꯤ 1 ꯄꯨꯡ ꯑꯃꯥ ꯊꯨꯅꯥ ꯂꯣꯏꯁꯤꯅꯕꯥ ꯉꯃꯍꯜꯂꯤ꯫ ꯃꯁꯤꯒꯤ ꯑꯍꯥꯅꯕꯥ ꯈꯣꯡꯖꯦꯜ ꯑꯁꯤ ꯀꯔꯤꯅꯣ?
A12 km/h
B15 km/h
C10 km/h
D20 km/h
Answer & Solution
Correct answer: B. 15 km/h
60/s - 60/(s+5) = 1ꯅꯥ s(s+5) = 300 ꯄꯤ, ꯃꯔꯝ ꯑꯗꯨꯅꯥ s = 15 ꯀꯤ.ꯃꯤ.
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