307  Stamp
How many stamps? 2

Name : _________________

refresh

There are 210 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1810 cents. How many 8-cent stamps are there?



There are 180 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1420 cents. How many 7-cent stamps are there?



There are 190 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 780 cents. How many 6-cent stamps are there?



There are 240 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 1170 cents. How many 6-cent stamps are there?



There are 260 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1590 cents. How many 4-cent stamps are there?

There are 160 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1090 cents. How many 4-cent stamps are there?



There are 220 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1530 cents. How many 4-cent stamps are there?



오늘 6원짜리 7원짜리 우표 총 230 장을 사고, 1480 원을 지불 했을때, 몇개의 6원짜리 우표를 샀는가?



There are 230 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1490 cents. How many 6-cent stamps are there?



There are 140 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 630 cents. How many 5-cent stamps are there?

+(         )

(         )+

++[[          ]]++