165  Leg-Stamp
닭다리 개다리 2

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There are 230 heads of Chickens and Dogs together. Altogether there are 640 legs. How many chickens are there?



There are 160 heads of Chickens and Dogs together. Altogether there are 540 legs. How many chickens are there?



우리 안에 총 230 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 640 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 130 heads of Chickens and Dogs together. Altogether there are 400 legs. How many chickens are there?



There are 170 heads of Chickens and Dogs together. Altogether there are 580 legs. How many chickens are there?

There are 180 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 650 cents. How many 4-cent stamps are there?



There are 270 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1470 cents. How many 5-cent stamps are there?



오늘 5원짜리 8원짜리 우표 총 240장을 사고, 1590 원을 지불 했을때, 몇개의 5원짜리 우표를 샀는가?



There are 210 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1100 cents. How many 6-cent stamps are there?



There are 240 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 1050 cents. How many 4-cent stamps are there?

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