755  Leg-Stamp
닭다리 개다리 2

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There are 190 heads of Chickens and Dogs together. Altogether there are 540 legs. How many chickens are there?



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



우리 안에 총 110 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 340 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 100 heads of Chickens and Dogs together. Altogether there are 260 legs. How many chickens are there?



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

There are 120 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 870 cents. How many 6-cent stamps are there?



There are 170 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1290 cents. How many 7-cent stamps are there?



오늘 6원짜리 9원짜리 우표 총 140장을 사고, 990 원을 지불 했을때, 몇개의 6원짜리 우표를 샀는가?



There are 220 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 940 cents. How many 5-cent stamps are there?



There are 250 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1730 cents. How many 5-cent stamps are there?

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