588  Leg-Stamp
닭다리 개다리 2

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There are 140 heads of Chickens and Dogs together. Altogether there are 380 legs. How many chickens are there?



There are 160 heads of Chickens and Dogs together. Altogether there are 440 legs. How many chickens are there?



우리 안에 총 160 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 520 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 240 heads of Chickens and Dogs together. Altogether there are 740 legs. How many chickens are there?



There are 230 heads of Chickens and Dogs together. Altogether there are 660 legs. How many chickens are there?

There are 260 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 2200 cents. How many 8-cent stamps are there?



There are 210 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1540 cents. How many 8-cent stamps are there?



오늘 8원짜리 4원짜리 우표 총 190장을 사고, 1240 원을 지불 했을때, 몇개의 8원짜리 우표를 샀는가?



There are 260 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1560 cents. How many 5-cent stamps are there?



There are 250 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 1220 cents. How many 4-cent stamps are there?

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