189  Leg-Stamp
닭다리 개다리 2

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There are 90 heads of Chickens and Dogs together. Altogether there are 280 legs. How many chickens are there?



There are 110 heads of Chickens and Dogs together. Altogether there are 340 legs. How many chickens are there?



우리 안에 총 220 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 640 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 200 heads of Chickens and Dogs together. Altogether there are 580 legs. How many chickens are there?



There are 190 heads of Chickens and Dogs together. Altogether there are 600 legs. How many chickens are there?

There are 270 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 1210 cents. How many 4-cent stamps are there?



There are 170 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1010 cents. How many 5-cent stamps are there?



오늘 4원짜리 7원짜리 우표 총 190장을 사고, 970 원을 지불 했을때, 몇개의 4원짜리 우표를 샀는가?



There are 180 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 630 cents. How many 4-cent stamps are there?



There are 220 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1460 cents. How many 6-cent stamps are there?

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