170  Leg-Stamp
닭다리 개다리 2

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There are 220 heads of Chickens and Dogs together. Altogether there are 600 legs. How many chickens are there?



There are 150 heads of Chickens and Dogs together. Altogether there are 500 legs. How many chickens are there?



우리 안에 총 200 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 660 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 130 heads of Chickens and Dogs together. Altogether there are 360 legs. How many chickens are there?



There are 220 heads of Chickens and Dogs together. Altogether there are 620 legs. How many chickens are there?

There are 150 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1250 cents. How many 8-cent stamps are there?



There are 170 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1120 cents. How many 7-cent stamps are there?



오늘 5원짜리 9원짜리 우표 총 210장을 사고, 1330 원을 지불 했을때, 몇개의 5원짜리 우표를 샀는가?



There are 200 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 910 cents. How many 5-cent stamps are there?



There are 260 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 1200 cents. How many 6-cent stamps are there?

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