547  Stamp
How many stamps? 1

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There are 190 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1230 cents. How many 6-cent stamps are there?



There are 130 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 940 cents. How many 8-cent stamps are there?



There are 180 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1170 cents. How many 4-cent stamps are there?



There are 180 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1390 cents. How many 8-cent stamps are there?



There are 170 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 830 cents. How many 3-cent stamps are there?



There are 150 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1260 cents. How many 8-cent stamps are there?



There are 210 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 740 cents. How many 4-cent stamps are there?



There are 210 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1330 cents. How many 7-cent stamps are there?



There are 190 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1150 cents. How many 7-cent stamps are there?



There are 200 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1320 cents. How many 6-cent stamps are there?



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547    100 80 90 130 90 ( 490 )   90 110 140 100 80 ( 520 )   [[ 1010 ]]