583  Stamp
How many stamps? 1

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There are 210 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 1030 cents. How many 3-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 200 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 1100 cents. How many 6-cent stamps are there?



There are 200 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1180 cents. How many 5-cent stamps are there?



There are 170 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1090 cents. How many 5-cent stamps are there?



There are 200 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 1160 cents. How many 7-cent stamps are there?



There are 220 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1430 cents. How many 6-cent stamps are there?



There are 220 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1230 cents. How many 4-cent stamps are there?



There are 190 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1310 cents. How many 5-cent stamps are there?



There are 260 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1950 cents. How many 6-cent stamps are there?



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583    110 130 100 140 90 ( 570 )   140 110 150 100 130 ( 630 )   [[ 1200 ]]