158  Stamp
How many stamps? 2

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There are 250 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1860 cents. How many 6-cent stamps are there?



There are 170 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 820 cents. How many 4-cent stamps are there?



There are 250 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 1190 cents. How many 3-cent stamps are there?



There are 140 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 720 cents. How many 3-cent stamps are there?



There are 270 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1830 cents. How many 5-cent stamps are there?

There are 190 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 890 cents. How many 3-cent stamps are there?



There are 280 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 1490 cents. How many 3-cent stamps are there?



오늘 5원짜리 8원짜리 우표 총 220 장을 사고, 1310 원을 지불 했을때, 몇개의 5원짜리 우표를 샀는가?



There are 240 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 820 cents. How many 3-cent stamps are there?



There are 200 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1150 cents. How many 5-cent stamps are there?

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