563  Stamp
How many stamps? 1

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There are 170 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1010 cents. How many 8-cent stamps are there?



There are 200 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 680 cents. How many 4-cent stamps are there?



There are 160 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 570 cents. How many 4-cent stamps are there?



There are 250 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 870 cents. How many 3-cent stamps are there?



There are 150 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 750 cents. How many 3-cent stamps are there?



There are 230 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 1080 cents. How many 3-cent stamps are there?



There are 190 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 1020 cents. How many 3-cent stamps are there?



There are 200 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1650 cents. How many 8-cent stamps are there?



There are 170 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 860 cents. How many 3-cent stamps are there?



There are 190 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1220 cents. How many 8-cent stamps are there?



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563    100 80 90 130 90 ( 490 )   100 100 150 100 90 ( 540 )   [[ 1030 ]]