188  Leg-Stamp
닭다리 개다리 2

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There are 130 heads of Chickens and Dogs together. Altogether there are 440 legs. How many chickens are there?



There are 180 heads of Chickens and Dogs together. Altogether there are 440 legs. How many chickens are there?



우리 안에 총 100 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 260 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 180 heads of Chickens and Dogs together. Altogether there are 480 legs. How many chickens are there?



There are 110 heads of Chickens and Dogs together. Altogether there are 340 legs. How many chickens are there?

There are 180 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 780 cents. How many 3-cent stamps are there?



There are 160 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 920 cents. How many 4-cent stamps are there?



오늘 6원짜리 7원짜리 우표 총 250장을 사고, 1600 원을 지불 했을때, 몇개의 6원짜리 우표를 샀는가?



There are 190 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1570 cents. How many 7-cent stamps are there?



There are 200 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 860 cents. How many 5-cent stamps are there?

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