817  Stamp
How many stamps? 1

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There are 190 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1220 cents. How many 8-cent stamps are there?



There are 170 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1060 cents. How many 8-cent stamps are there?



There are 250 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1490 cents. How many 7-cent stamps are there?



There are 200 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 920 cents. How many 7-cent stamps are there?



There are 210 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 1190 cents. How many 6-cent stamps are there?



There are 250 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1870 cents. How many 7-cent stamps are there?



There are 140 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 800 cents. How many 7-cent stamps are there?



There are 170 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 770 cents. How many 4-cent stamps are there?



There are 220 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1620 cents. How many 6-cent stamps are there?



There are 210 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1330 cents. How many 5-cent stamps are there?



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817    130 70 120 80 140 ( 540 )   130 80 80 120 140 ( 550 )   [[ 1090 ]]