553  Leg-Stamp
닭다리 개다리 1

Name : _________________

refresh

There are 200 heads of Chickens and Dogs together. Altogether there are 640 legs. How many chickens are there?



There are 130 heads of Chickens and Dogs together. Altogether there are 320 legs. How many chickens are there?



There are 260 heads of Chickens and Dogs together. Altogether there are 760 legs. How many chickens are there?



There are 150 heads of Chickens and Dogs together. Altogether there are 500 legs. How many chickens are there?



There are 160 heads of Chickens and Dogs together. Altogether there are 440 legs. How many chickens are there?

There are 270 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 1210 cents. How many 4-cent stamps are there?



There are 240 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 1350 cents. How many 4-cent stamps are there?



There are 250 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 2130 cents. How many 8-cent stamps are there?



There are 150 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1070 cents. How many 5-cent stamps are there?



There are 170 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 710 cents. How many 5-cent stamps are there?

+(         )

(         )+

++[[          ]]++