239  Leg-Stamp
닭다리 개다리 2

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There are 160 heads of Chickens and Dogs together. Altogether there are 560 legs. How many chickens are there?



There are 90 heads of Chickens and Dogs together. Altogether there are 240 legs. How many chickens are there?



우리 안에 총 190 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 500 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 180 heads of Chickens and Dogs together. Altogether there are 580 legs. How many chickens are there?



There are 260 heads of Chickens and Dogs together. Altogether there are 760 legs. How many chickens are there?

There are 150 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 650 cents. How many 4-cent stamps are there?



There are 240 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1830 cents. How many 8-cent stamps are there?



오늘 7원짜리 8원짜리 우표 총 180장을 사고, 1310 원을 지불 했을때, 몇개의 7원짜리 우표를 샀는가?



There are 220 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 1140 cents. How many 3-cent stamps are there?



There are 250 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1880 cents. How many 8-cent stamps are there?

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