671  Leg-Stamp
닭다리 개다리 2

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There are 130 heads of Chickens and Dogs together. Altogether there are 320 legs. How many chickens are there?



There are 190 heads of Chickens and Dogs together. Altogether there are 560 legs. How many chickens are there?



우리 안에 총 90 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 260 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 140 heads of Chickens and Dogs together. Altogether there are 340 legs. How many chickens are there?



There are 140 heads of Chickens and Dogs together. Altogether there are 340 legs. How many chickens are there?

There are 260 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1430 cents. How many 5-cent stamps are there?



There are 180 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1320 cents. How many 7-cent stamps are there?



오늘 8원짜리 9원짜리 우표 총 150장을 사고, 1260 원을 지불 했을때, 몇개의 8원짜리 우표를 샀는가?



There are 210 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1250 cents. How many 5-cent stamps are there?



There are 220 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 1020 cents. How many 3-cent stamps are there?

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