845  Stamp
How many stamps? 2

Name : _________________

refresh

There are 230 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1940 cents. How many 8-cent stamps are there?



There are 210 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 1110 cents. How many 7-cent stamps are there?



There are 140 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 630 cents. How many 3-cent stamps are there?



There are 210 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1320 cents. How many 5-cent stamps are there?



There are 200 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1520 cents. How many 8-cent stamps are there?

There are 250 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 990 cents. How many 3-cent stamps are there?



There are 160 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 880 cents. How many 8-cent stamps are there?



오늘 3원짜리 6원짜리 우표 총 230 장을 사고, 990 원을 지불 했을때, 몇개의 3원짜리 우표를 샀는가?



There are 160 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 810 cents. How many 6-cent stamps are there?



There are 210 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1170 cents. How many 3-cent stamps are there?

+(         )

(         )+

++[[          ]]++