354  Stamp
How many stamps? 2

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There are 150 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 890 cents. How many 5-cent stamps are there?



There are 150 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1110 cents. How many 7-cent stamps are there?



There are 200 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1400 cents. How many 8-cent stamps are there?



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



There are 160 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 850 cents. How many 5-cent stamps are there?



There are 190 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 970 cents. How many 8-cent stamps are there?



There are 230 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1370 cents. How many 7-cent stamps are there?



오늘 5원짜리 7원짜리 우표 총 230 장을 사고, 1310 원을 지불 했을때, 몇개의 5원짜리 우표를 샀는가?



There are 200 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1300 cents. How many 6-cent stamps are there?



There are 160 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 980 cents. How many 5-cent stamps are there?



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