849  Leg-Stamp
닭다리 개다리 2

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There are 190 heads of Chickens and Dogs together. Altogether there are 520 legs. How many chickens are there?



There are 80 heads of Chickens and Dogs together. Altogether there are 220 legs. How many chickens are there?



우리 안에 총 200 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 620 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 180 heads of Chickens and Dogs together. Altogether there are 440 legs. How many chickens are there?



There are 160 heads of Chickens and Dogs together. Altogether there are 380 legs. How many chickens are there?

There are 200 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 960 cents. How many 3-cent stamps are there?



There are 240 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 920 cents. How many 3-cent stamps are there?



오늘 3원짜리 8원짜리 우표 총 220장을 사고, 1060 원을 지불 했을때, 몇개의 3원짜리 우표를 샀는가?



There are 180 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 740 cents. How many 3-cent stamps are there?



There are 170 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1050 cents. How many 5-cent stamps are there?

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