888  Stamp
How many stamps? 1

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There are 250 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1690 cents. How many 5-cent stamps are there?



There are 190 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1420 cents. How many 8-cent stamps are there?



There are 240 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1320 cents. How many 4-cent stamps are there?



There are 210 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1170 cents. How many 5-cent stamps are there?



There are 140 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 910 cents. How many 8-cent stamps are there?



There are 220 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1120 cents. How many 6-cent stamps are there?



There are 140 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 490 cents. How many 4-cent stamps are there?



There are 210 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1230 cents. How many 5-cent stamps are there?



There are 270 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 2010 cents. How many 6-cent stamps are there?



There are 230 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1600 cents. How many 8-cent stamps are there?



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888    140 140 150 150 70 ( 650 )   120 70 120 140 150 ( 600 )   [[ 1250 ]]