400  Stamp
How many stamps? 2

Name : _________________

refresh

There are 200 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1510 cents. How many 7-cent stamps are there?



There are 240 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1470 cents. How many 5-cent stamps are there?



There are 120 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 500 cents. How many 5-cent stamps are there?



There are 230 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1460 cents. How many 6-cent stamps are there?



There are 220 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 900 cents. How many 5-cent stamps are there?

There are 230 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 1140 cents. How many 4-cent stamps are there?



There are 230 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1440 cents. How many 8-cent stamps are there?



오늘 4원짜리 9원짜리 우표 총 190 장을 사고, 1360 원을 지불 했을때, 몇개의 4원짜리 우표를 샀는가?



There are 200 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1120 cents. How many 4-cent stamps are there?



There are 140 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 660 cents. How many 4-cent stamps are there?

+(         )

(         )+

++[[          ]]++