347  Leg-Stamp
닭다리 개다리 2

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There are 90 heads of Chickens and Dogs together. Altogether there are 240 legs. How many chickens are there?



There are 120 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 600 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 210 heads of Chickens and Dogs together. Altogether there are 680 legs. How many chickens are there?



There are 250 heads of Chickens and Dogs together. Altogether there are 760 legs. How many chickens are there?

There are 220 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1430 cents. How many 5-cent stamps are there?



There are 280 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 1550 cents. How many 6-cent stamps are there?



오늘 5원짜리 7원짜리 우표 총 190장을 사고, 1190 원을 지불 했을때, 몇개의 5원짜리 우표를 샀는가?



There are 170 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 790 cents. How many 3-cent stamps are there?



There are 230 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1280 cents. How many 7-cent stamps are there?

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