831  Leg-Stamp
닭다리 개다리 2

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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?



우리 안에 총 130 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 440 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 220 heads of Chickens and Dogs together. Altogether there are 700 legs. How many chickens are there?



There are 140 heads of Chickens and Dogs together. Altogether there are 360 legs. How many chickens are there?

There are 150 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 850 cents. How many 8-cent stamps are there?



There are 190 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 810 cents. How many 3-cent stamps are there?



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



There are 140 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 680 cents. How many 4-cent stamps are there?



There are 150 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 900 cents. How many 5-cent stamps are there?

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