409  Stamp
How many stamps? 1

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There are 200 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1050 cents. How many 8-cent stamps are there?



There are 130 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 460 cents. How many 4-cent stamps are there?



There are 230 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 890 cents. How many 3-cent stamps are there?



There are 140 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 700 cents. How many 7-cent stamps are there?



There are 170 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1120 cents. How many 5-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 150 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 850 cents. How many 4-cent stamps are there?



There are 170 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1170 cents. How many 6-cent stamps are there?



There are 220 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1450 cents. How many 7-cent stamps are there?



There are 180 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1260 cents. How many 8-cent stamps are there?



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409    90 70 130 70 80 ( 440 )   140 100 120 130 120 ( 610 )   [[ 1050 ]]