alleryꯀꯔꯤꯒꯨꯝꯕꯥ a : b = 2 : 3 ꯑꯃꯁꯨꯡ b : c = 4 : 5 ꯑꯣꯏꯔꯕꯗꯤ, a : c ꯑꯁꯤ:
A2 : 5
B3 : 4
C8 : 15
D5 : 8
Answer & Solution
Correct answer: C. 8 : 15
1. ꯔꯦꯁꯤꯑꯣ ꯑꯅꯤ ꯑꯁꯤ b ꯍꯥꯌꯕꯁꯤ ꯑꯅꯤꯃꯛꯇꯥ ꯆꯞ ꯃꯥꯟꯅꯕꯥ ꯆꯥꯡ ꯑꯗꯨ ꯇꯥꯛꯠꯔꯤꯐꯥꯑꯣꯕꯥ ꯆꯦꯟ ꯇꯧꯕꯥ ꯌꯥꯔꯣꯏ꯫ 2. ꯑꯍꯥꯅꯕꯥ ꯑꯣꯏꯅꯥ b ꯑꯁꯤ 3ꯅꯤ ꯑꯃꯁꯨꯡ ꯑꯅꯤꯁꯨꯕꯗꯥ b ꯑꯁꯤ 4ꯅꯤ, ꯃꯔꯝ ꯑꯗꯨꯅꯥ ꯑꯃꯃꯃꯗꯥ ꯃꯈꯣꯌꯒꯤ LCM, 12ꯗꯥ ꯁ꯭ꯀꯦꯜ ꯇꯧꯕꯤꯌꯨ 3. ꯑꯍꯥꯅꯕꯥ ꯑꯗꯨꯕꯨ 4ꯅꯥ ꯃꯁꯤꯡ ꯌꯥꯃꯍꯅꯕꯤꯌꯨ: a : b = 8 : 12. 4. ꯑꯅꯤꯁꯨꯕꯥ ꯑꯗꯨꯕꯨ 3ꯅꯥ ꯃꯁꯤꯡ ꯌꯥꯃꯍꯅꯕꯤꯌꯨ: b : c = 12 : 15. 5. ꯍꯧꯖꯤꯛ a : b : c = 8 : 12 : 15, ꯃꯔꯝ ꯑꯗꯨꯅꯥ a : c = 8 : 15. ꯄꯥꯎꯈꯨꯝ ꯄꯤꯕꯥ꯫ 2 : 5 ꯑꯁꯤ ꯃꯦꯆ ꯇꯧꯗꯅꯥ ꯃꯄꯥꯅꯒꯤ ꯇꯔꯃꯁꯤꯡ ꯃꯁꯤꯡ ꯌꯥꯃꯍꯅꯕꯗꯒꯤ ꯂꯥꯀꯏ b. _ꯁꯣꯔꯁ: ꯁꯤꯂꯦꯕꯁ ꯃꯦꯊꯁ, Ch 7 ‘ꯀꯝꯄꯥꯔꯤꯡ ꯀ꯭ꯕꯥꯟꯇꯤꯇꯤ’, S7.1 ꯔꯤꯀꯣꯂꯤꯡ ꯔꯦꯁꯤꯑꯣ ꯑꯃꯁꯨꯡ ꯄꯥꯔꯁꯦꯟꯇꯦꯖ_
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