287  Stamp
How many stamps? 2

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There are 160 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 560 cents. How many 4-cent stamps are there?



There are 270 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1770 cents. How many 7-cent stamps are there?



There are 160 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1190 cents. How many 7-cent stamps are there?



There are 210 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1620 cents. How many 8-cent stamps are there?



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 210 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1290 cents. How many 5-cent stamps are there?



There are 210 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1360 cents. How many 4-cent stamps are there?



오늘 5원짜리 8원짜리 우표 총 190 장을 사고, 1160 원을 지불 했을때, 몇개의 5원짜리 우표를 샀는가?



There are 200 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 1000 cents. How many 3-cent stamps are there?



There are 130 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 790 cents. How many 7-cent stamps are there?

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