545  Stamp
How many stamps? 1

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There are 160 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 980 cents. How many 8-cent stamps are there?



There are 180 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1000 cents. How many 5-cent stamps are there?



There are 140 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 690 cents. How many 6-cent stamps are there?



There are 240 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1530 cents. How many 5-cent stamps are there?



There are 220 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 840 cents. How many 5-cent stamps are there?



There are 140 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 490 cents. How many 3-cent stamps are there?



There are 270 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 960 cents. How many 4-cent stamps are there?



There are 200 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1460 cents. How many 7-cent stamps are there?



There are 170 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1000 cents. How many 8-cent stamps are there?



There are 270 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1770 cents. How many 8-cent stamps are there?



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545    100 80 90 130 90 ( 490 )   70 150 140 80 140 ( 580 )   [[ 1070 ]]