904  Stamp
How many stamps? 2

Name : _________________

refresh

There are 210 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1330 cents. How many 7-cent stamps are there?



There are 180 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 860 cents. How many 6-cent stamps are there?



There are 200 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1150 cents. How many 4-cent stamps are there?



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



There are 170 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 730 cents. How many 4-cent stamps are there?

There are 210 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 990 cents. How many 7-cent stamps are there?



There are 180 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 940 cents. How many 7-cent stamps are there?



오늘 7원짜리 6원짜리 우표 총 200 장을 사고, 1340 원을 지불 했을때, 몇개의 7원짜리 우표를 샀는가?



There are 220 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1440 cents. How many 7-cent stamps are there?



There are 150 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 660 cents. How many 3-cent stamps are there?

+(         )

(         )+

++[[          ]]++