241  Leg-Stamp
닭다리 개다리 2

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There are 100 heads of Chickens and Dogs together. Altogether there are 320 legs. How many chickens are there?



There are 190 heads of Chickens and Dogs together. Altogether there are 600 legs. How many chickens are there?



우리 안에 총 190 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 560 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



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

There are 250 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1610 cents. How many 8-cent stamps are there?



There are 220 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1360 cents. How many 8-cent stamps are there?



오늘 3원짜리 7원짜리 우표 총 190장을 사고, 1050 원을 지불 했을때, 몇개의 3원짜리 우표를 샀는가?



There are 220 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 1020 cents. How many 6-cent stamps are there?



There are 280 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1810 cents. How many 6-cent stamps are there?

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