487  Stamp
How many stamps? 2

Name : _________________

refresh

There are 190 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1420 cents. How many 7-cent stamps are there?



There are 120 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 760 cents. How many 8-cent stamps are there?



There are 210 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1310 cents. How many 7-cent stamps are there?



There are 160 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 960 cents. How many 8-cent stamps are there?



There are 140 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 920 cents. How many 8-cent stamps are there?

There are 190 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 850 cents. How many 4-cent stamps are there?



There are 150 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 870 cents. How many 3-cent stamps are there?



오늘 6원짜리 4원짜리 우표 총 200 장을 사고, 960 원을 지불 했을때, 몇개의 6원짜리 우표를 샀는가?



There are 170 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 870 cents. How many 7-cent stamps are there?



There are 250 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1260 cents. How many 6-cent stamps are there?

+(         )

(         )+

++[[          ]]++