969  Stamp
How many stamps? 1

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There are 260 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1700 cents. How many 7-cent stamps are there?



There are 200 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 730 cents. How many 3-cent stamps are there?



There are 250 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 1110 cents. How many 3-cent stamps are there?



There are 170 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 920 cents. How many 7-cent stamps are there?



There are 230 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 1090 cents. How many 3-cent stamps are there?



There are 220 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1450 cents. How many 7-cent stamps are there?



There are 200 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1450 cents. How many 8-cent stamps are there?



There are 200 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1200 cents. How many 7-cent stamps are there?



There are 260 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1720 cents. How many 8-cent stamps are there?



There are 200 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1160 cents. How many 7-cent stamps are there?



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969    140 70 130 80 130 ( 550 )   130 150 100 140 80 ( 600 )   [[ 1150 ]]