194  Stamp
How many stamps? 2

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There are 180 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1480 cents. How many 7-cent stamps are there?



There are 150 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1170 cents. How many 7-cent stamps are there?



There are 140 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 740 cents. How many 4-cent stamps are there?



There are 220 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1330 cents. How many 7-cent stamps are there?



There are 190 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1070 cents. How many 8-cent stamps are there?



There are 200 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1120 cents. How many 8-cent stamps are there?



There are 190 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1430 cents. How many 5-cent stamps are there?



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There are 210 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1280 cents. How many 8-cent stamps are there?



There are 200 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1080 cents. How many 8-cent stamps are there?



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194    70 90 80 150 100 ( 490 )   80 70 140 110 70 ( 470 )   [[ 960 ]]