752  Leg-Stamp
닭다리 개다리 2

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



There are 220 heads of Chickens and Dogs together. Altogether there are 640 legs. How many chickens are there?



우리 안에 총 110 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 280 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 190 heads of Chickens and Dogs together. Altogether there are 500 legs. How many chickens are there?



There are 170 heads of Chickens and Dogs together. Altogether there are 500 legs. How many chickens are there?

There are 170 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 890 cents. How many 7-cent stamps are there?



There are 160 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 780 cents. How many 3-cent stamps are there?



오늘 3원짜리 7원짜리 우표 총 190장을 사고, 970 원을 지불 했을때, 몇개의 3원짜리 우표를 샀는가?



There are 210 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 930 cents. How many 5-cent stamps are there?



There are 200 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 1250 cents. How many 3-cent stamps are there?

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