565  Stamp
How many stamps? 1

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There are 220 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 960 cents. How many 6-cent stamps are there?



There are 160 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1360 cents. How many 8-cent stamps are there?



There are 210 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1440 cents. How many 8-cent stamps are there?



There are 240 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 1090 cents. How many 5-cent stamps are there?



There are 190 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1160 cents. How many 8-cent stamps are there?



There are 280 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 1290 cents. How many 6-cent stamps are there?



There are 250 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1850 cents. How many 7-cent stamps are there?



There are 270 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1680 cents. How many 4-cent stamps are there?



There are 200 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1530 cents. How many 8-cent stamps are there?



There are 210 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1690 cents. How many 7-cent stamps are there?



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565    100 80 150 130 100 ( 560 )   150 150 150 130 100 ( 680 )   [[ 1240 ]]