940  Leg-Stamp
닭다리 개다리 2

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There are 240 heads of Chickens and Dogs together. Altogether there are 700 legs. How many chickens are there?



There are 120 heads of Chickens and Dogs together. Altogether there are 300 legs. How many chickens are there?



우리 안에 총 140 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 360 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 110 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 520 legs. How many chickens are there?

There are 250 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1510 cents. How many 7-cent stamps are there?



There are 150 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 770 cents. How many 7-cent stamps are there?



오늘 8원짜리 3원짜리 우표 총 220장을 사고, 1110 원을 지불 했을때, 몇개의 8원짜리 우표를 샀는가?



There are 190 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1340 cents. How many 8-cent stamps are there?



There are 190 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 720 cents. How many 3-cent stamps are there?

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