789  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 160 heads of Chickens and Dogs together. Altogether there are 500 legs. How many chickens are there?



우리 안에 총 220 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 700 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 200 heads of Chickens and Dogs together. Altogether there are 520 legs. How many chickens are there?



There are 170 heads of Chickens and Dogs together. Altogether there are 480 legs. How many chickens are there?



There are 220 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1640 cents. How many 7-cent stamps are there?



There are 160 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1110 cents. How many 6-cent stamps are there?



오늘 7원짜리 3원짜리 우표 총 200장을 사고, 1000 원을 지불 했을때, 몇개의 7원짜리 우표를 샀는가?



There are 170 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 740 cents. How many 4-cent stamps are there?



There are 160 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 870 cents. How many 6-cent stamps are there?



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789    110 70 70 140 100 ( 490 )   120 110 110 110 70 ( 520 )   [[ 1010 ]]