890  Stamp
How many stamps? 1

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There are 250 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 1080 cents. How many 3-cent stamps are there?



There are 130 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 860 cents. How many 8-cent stamps are there?



There are 190 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 1120 cents. How many 3-cent stamps are there?



There are 120 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 660 cents. How many 3-cent stamps are there?



There are 200 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1070 cents. How many 5-cent stamps are there?



There are 120 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 530 cents. How many 4-cent stamps are there?



There are 250 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1470 cents. How many 5-cent stamps are there?



There are 160 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1010 cents. How many 8-cent stamps are there?



There are 130 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 490 cents. How many 3-cent stamps are there?



There are 190 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1300 cents. How many 8-cent stamps are there?



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890    140 70 80 70 130 ( 490 )   70 140 70 80 80 ( 440 )   [[ 930 ]]