825  Stamp
How many stamps? 1

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There are 260 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1420 cents. How many 5-cent stamps are there?



There are 200 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1710 cents. How many 8-cent stamps are there?



There are 230 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1250 cents. How many 5-cent stamps are there?



There are 140 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1050 cents. How many 8-cent stamps are there?



There are 210 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1500 cents. How many 6-cent stamps are there?



There are 220 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1180 cents. How many 7-cent stamps are there?



There are 160 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 840 cents. How many 3-cent stamps are there?



There are 230 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1330 cents. How many 5-cent stamps are there?



There are 170 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1120 cents. How many 6-cent stamps are there?



There are 210 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 870 cents. How many 3-cent stamps are there?



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825    140 90 130 70 130 ( 560 )   100 100 140 120 130 ( 590 )   [[ 1150 ]]