764  Stamp
How many stamps? 2

Name : _________________

refresh

There are 250 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 1390 cents. How many 4-cent stamps are there?



There are 230 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 850 cents. How many 3-cent stamps are there?



There are 190 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 640 cents. How many 4-cent stamps are there?



There are 200 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 960 cents. How many 3-cent stamps are there?



There are 220 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1430 cents. How many 6-cent stamps are there?

There are 210 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1440 cents. How many 6-cent stamps are there?



There are 130 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 570 cents. How many 4-cent stamps are there?



오늘 3원짜리 7원짜리 우표 총 210 장을 사고, 990 원을 지불 했을때, 몇개의 3원짜리 우표를 샀는가?



There are 200 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1320 cents. How many 3-cent stamps are there?



There are 180 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1000 cents. How many 4-cent stamps are there?

+(         )

(         )+

++[[          ]]++