329  Leg-Stamp
닭다리 개다리 2

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There are 120 heads of Chickens and Dogs together. Altogether there are 380 legs. How many chickens are there?



There are 170 heads of Chickens and Dogs together. Altogether there are 420 legs. How many chickens are there?



우리 안에 총 150 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 520 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 170 heads of Chickens and Dogs together. Altogether there are 540 legs. How many chickens are there?



There are 180 heads of Chickens and Dogs together. Altogether there are 500 legs. How many chickens are there?

There are 170 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1240 cents. How many 7-cent stamps are there?



There are 210 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1310 cents. How many 5-cent stamps are there?



오늘 6원짜리 5원짜리 우표 총 200장을 사고, 1100 원을 지불 했을때, 몇개의 6원짜리 우표를 샀는가?



There are 130 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 790 cents. How many 8-cent stamps are there?



There are 230 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1670 cents. How many 5-cent stamps are there?

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