561  Stamp
How many stamps? 2

Name : _________________

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There are 170 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1120 cents. How many 7-cent stamps are there?



There are 240 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1900 cents. How many 7-cent stamps are there?



There are 170 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1130 cents. How many 5-cent stamps are there?



There are 210 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 990 cents. How many 7-cent stamps are there?



There are 190 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1270 cents. How many 7-cent stamps are there?

There are 270 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1880 cents. How many 6-cent stamps are there?



There are 240 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1620 cents. How many 6-cent stamps are there?



오늘 3원짜리 7원짜리 우표 총 280 장을 사고, 1360 원을 지불 했을때, 몇개의 3원짜리 우표를 샀는가?



There are 170 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 580 cents. How many 3-cent stamps are there?



There are 230 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 1050 cents. How many 5-cent stamps are there?

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