884  Leg-Stamp
닭다리 개다리 2

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There are 170 heads of Chickens and Dogs together. Altogether there are 440 legs. How many chickens are there?



There are 140 heads of Chickens and Dogs together. Altogether there are 400 legs. How many chickens are there?



우리 안에 총 190 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 560 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 230 heads of Chickens and Dogs together. Altogether there are 720 legs. How many chickens are there?



There are 100 heads of Chickens and Dogs together. Altogether there are 280 legs. How many chickens are there?

There are 150 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 800 cents. How many 3-cent stamps are there?



There are 190 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 790 cents. How many 3-cent stamps are there?



오늘 8원짜리 5원짜리 우표 총 220장을 사고, 1550 원을 지불 했을때, 몇개의 8원짜리 우표를 샀는가?



There are 250 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1870 cents. How many 8-cent stamps are there?



There are 150 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 530 cents. How many 4-cent stamps are there?

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