ꯃꯤꯑꯣꯏ ꯑꯃꯅꯥ ꯈꯣꯉꯆꯠ ꯑꯃꯒꯤ ꯑꯍꯥꯅꯕꯥ ꯁꯔꯨꯛ ꯑꯗꯨ ꯄꯨꯡꯗꯥ $30$ ꯀꯤꯂꯣꯃꯤꯇꯔꯗꯥ ꯑꯃꯁꯨꯡ ꯑꯅꯤꯁꯨꯕꯥ ꯁꯔꯨꯛ ꯑꯗꯨ $60$ ꯀꯤꯂꯣꯃꯤꯇꯔꯗꯥ ꯆꯠꯂꯤ꯫ ꯈꯣꯉꯆꯠ ꯄꯨꯝꯅꯃꯛꯀꯤ ꯑꯣꯏꯅꯥ ꯃꯍꯥꯛꯀꯤ ꯆꯥꯡꯆꯠꯇꯥ ꯑꯣꯏꯕꯥ ꯈꯣꯡꯖꯦꯜ ꯑꯗꯨ ꯈꯉꯗꯣꯀꯎ꯫

ꯆꯞ ꯃꯥꯟꯅꯕꯥ ꯂꯝꯕꯤꯁꯤꯡꯒꯤ ꯑꯣꯏꯅꯗꯤ, ꯆꯥꯡꯆꯠꯇꯥ ꯈꯣꯡꯖꯦꯜ ꯑꯁꯤ ꯍꯥꯔꯃꯣꯅꯤꯛ ꯃꯤꯅꯅꯤ: $\dfrac{2xy}{x+y} = \dfrac{2 \times 30 \times 60}{90} = \dfrac{3600}{90} = 40$ km/hr. ꯑꯦꯔꯤꯊꯃꯦꯇꯤꯛ ꯃꯤꯟ $(30 + 60)/2 = 45$ ꯅꯠꯇꯦ — ꯃꯁꯤ ꯆꯞ ꯃꯥꯟꯅꯕꯥ *ꯃꯇꯝ*ꯒꯤꯗꯃꯛ ꯊꯝꯃꯤ, ꯆꯞ ꯃꯥꯟꯅꯕꯥ *ꯂꯥꯞꯄꯒꯤ* ꯅꯠꯇꯦ꯫