759  Leg-Stamp
닭다리 개다리 2

Name : _________________

refresh

There are 210 heads of Chickens and Dogs together. Altogether there are 680 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?



우리 안에 총 120 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 300 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 90 heads of Chickens and Dogs together. Altogether there are 240 legs. How many chickens are there?



There are 170 heads of Chickens and Dogs together. Altogether there are 440 legs. How many chickens are there?

There are 230 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1500 cents. How many 7-cent stamps are there?



There are 140 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 780 cents. How many 6-cent stamps are there?



오늘 4원짜리 7원짜리 우표 총 120장을 사고, 630 원을 지불 했을때, 몇개의 4원짜리 우표를 샀는가?



There are 150 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 750 cents. How many 4-cent stamps are there?



There are 170 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 840 cents. How many 6-cent stamps are there?

+(         )

(         )+

++[[          ]]++