437  Leg-Stamp
닭다리 개다리 2

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There are 200 heads of Chickens and Dogs together. Altogether there are 660 legs. How many chickens are there?



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



우리 안에 총 110 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 360 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 190 heads of Chickens and Dogs together. Altogether there are 620 legs. How many chickens are there?



There are 190 heads of Chickens and Dogs together. Altogether there are 540 legs. How many chickens are there?

There are 170 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 860 cents. How many 4-cent stamps are there?



There are 210 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1560 cents. How many 6-cent stamps are there?



오늘 6원짜리 9원짜리 우표 총 130장을 사고, 930 원을 지불 했을때, 몇개의 6원짜리 우표를 샀는가?



There are 270 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 1230 cents. How many 5-cent stamps are there?



There are 220 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 1020 cents. How many 3-cent stamps are there?

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