157  Leg-Stamp
닭다리 개다리 2

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There are 210 heads of Chickens and Dogs together. Altogether there are 560 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?



우리 안에 총 190 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 620 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 160 heads of Chickens and Dogs together. Altogether there are 400 legs. How many chickens are there?



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

There are 240 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 1320 cents. How many 7-cent stamps are there?



There are 270 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 1490 cents. How many 6-cent stamps are there?



오늘 3원짜리 8원짜리 우표 총 170장을 사고, 960 원을 지불 했을때, 몇개의 3원짜리 우표를 샀는가?



There are 140 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 990 cents. How many 6-cent stamps are there?



There are 230 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 1000 cents. How many 4-cent stamps are there?

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