938  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 160 heads of Chickens and Dogs together. Altogether there are 560 legs. How many chickens are there?



우리 안에 총 150 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 380 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 200 heads of Chickens and Dogs together. Altogether there are 660 legs. How many chickens are there?



There are 210 heads of Chickens and Dogs together. Altogether there are 600 legs. How many chickens are there?

There are 140 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 700 cents. How many 6-cent stamps are there?



There are 160 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 570 cents. How many 4-cent stamps are there?



오늘 7원짜리 6원짜리 우표 총 230장을 사고, 1490 원을 지불 했을때, 몇개의 7원짜리 우표를 샀는가?



There are 270 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 1460 cents. How many 3-cent stamps are there?



There are 130 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 630 cents. How many 3-cent stamps are there?

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