823  Stamp
How many stamps? 1

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There are 210 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1100 cents. How many 6-cent stamps are there?



There are 160 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 730 cents. How many 5-cent stamps are there?



There are 190 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 690 cents. How many 4-cent stamps are there?



There are 180 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1280 cents. How many 8-cent stamps are there?



There are 130 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 850 cents. How many 7-cent stamps are there?



There are 190 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 1030 cents. How many 4-cent stamps are there?



There are 200 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 730 cents. How many 3-cent stamps are there?



There are 140 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 620 cents. How many 3-cent stamps are there?



There are 160 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1100 cents. How many 6-cent stamps are there?



There are 160 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1120 cents. How many 8-cent stamps are there?



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823    130 90 120 100 70 ( 510 )   100 70 90 90 80 ( 430 )   [[ 940 ]]