835  Leg-Stamp
닭다리 개다리 2

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There are 220 heads of Chickens and Dogs together. Altogether there are 640 legs. How many chickens are there?



There are 250 heads of Chickens and Dogs together. Altogether there are 740 legs. How many chickens are there?



우리 안에 총 210 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 600 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 150 heads of Chickens and Dogs together. Altogether there are 500 legs. How many chickens are there?



There are 150 heads of Chickens and Dogs together. Altogether there are 500 legs. How many chickens are there?

There are 150 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 840 cents. How many 4-cent stamps are there?



There are 230 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 850 cents. How many 3-cent stamps are there?



오늘 8원짜리 7원짜리 우표 총 190장을 사고, 1410 원을 지불 했을때, 몇개의 8원짜리 우표를 샀는가?



There are 240 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1410 cents. How many 7-cent stamps are there?



There are 140 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 480 cents. How many 3-cent stamps are there?

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