159  Stamp
How many stamps? 2

Name : _________________

refresh

There are 280 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1830 cents. How many 7-cent stamps are there?



There are 220 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 1020 cents. How many 3-cent stamps are there?



There are 270 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1870 cents. How many 5-cent stamps are there?



There are 240 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1600 cents. How many 5-cent stamps are there?



There are 260 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 1160 cents. How many 4-cent stamps are there?

There are 250 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 950 cents. How many 3-cent stamps are there?



There are 160 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1030 cents. How many 8-cent stamps are there?



오늘 4원짜리 5원짜리 우표 총 210 장을 사고, 940 원을 지불 했을때, 몇개의 4원짜리 우표를 샀는가?



There are 240 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1700 cents. How many 6-cent stamps are there?



There are 210 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1540 cents. How many 8-cent stamps are there?

+(         )

(         )+

++[[          ]]++