438  Stamp
How many stamps? 2

Name : _________________

refresh

There are 140 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 830 cents. How many 7-cent stamps are there?



There are 160 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1000 cents. How many 4-cent stamps are there?



There are 180 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 860 cents. How many 3-cent stamps are there?



There are 200 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1360 cents. How many 5-cent stamps are there?



There are 190 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1160 cents. How many 4-cent stamps are there?

There are 190 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1420 cents. How many 8-cent stamps are there?



There are 190 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1530 cents. How many 7-cent stamps are there?



오늘 7원짜리 9원짜리 우표 총 270 장을 사고, 2150 원을 지불 했을때, 몇개의 7원짜리 우표를 샀는가?



There are 200 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 840 cents. How many 5-cent stamps are there?



There are 210 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 1080 cents. How many 4-cent stamps are there?

+(         )

(         )+

++[[          ]]++