843  Leg-Stamp
닭다리 개다리 2

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There are 140 heads of Chickens and Dogs together. Altogether there are 480 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?



우리 안에 총 120 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 340 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 140 heads of Chickens and Dogs together. Altogether there are 440 legs. How many chickens are there?



There are 240 heads of Chickens and Dogs together. Altogether there are 680 legs. How many chickens are there?

There are 220 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1400 cents. How many 8-cent stamps are there?



There are 210 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 980 cents. How many 5-cent stamps are there?



오늘 7원짜리 4원짜리 우표 총 220장을 사고, 1150 원을 지불 했을때, 몇개의 7원짜리 우표를 샀는가?



There are 260 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 1380 cents. How many 7-cent stamps are there?



There are 220 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 1180 cents. How many 4-cent stamps are there?

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