alleryꯈꯣꯉꯆꯠ ꯑꯃꯒꯤ ꯃꯥꯟꯅꯕꯥ ꯈꯣꯡ ꯑꯍꯨꯝ ꯑꯁꯤ 20, 30 ꯑꯃꯁꯨꯡ 60 ꯀꯤꯂꯣꯃꯤꯇꯔ ꯑꯃꯗꯥ ꯆꯦꯜꯂꯤ꯫ ꯃꯄꯨꯡ ꯐꯥꯕꯥ ꯈꯣꯡꯆꯠꯀꯤ ꯆꯥꯡꯆꯠꯇꯥ ꯈꯣꯡꯖꯦꯜ ꯑꯁꯤ ꯀꯌꯥꯅꯣ?
A40 km/h
B35 km/h
C30 km/h
D25 km/h
Answer & Solution
Correct answer: C. 30 km/h
ꯍꯥꯔꯃꯣꯅꯤꯛ ꯃꯤꯟ: 3 / (1/20 + 1/30 + 1/60) = 3 / (1/10) = 30 ꯀꯤ.ꯃꯤ.
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