486  Stamp
How many stamps? 1

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There are 190 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1040 cents. How many 5-cent stamps are there?



There are 120 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 800 cents. How many 5-cent stamps are there?



There are 180 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1530 cents. How many 8-cent stamps are there?



There are 200 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1460 cents. How many 6-cent stamps are there?



There are 150 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 690 cents. How many 5-cent stamps are there?



There are 240 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1500 cents. How many 5-cent stamps are there?



There are 210 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 1020 cents. How many 3-cent stamps are there?



There are 170 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1090 cents. How many 5-cent stamps are there?



There are 260 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1690 cents. How many 4-cent stamps are there?



There are 220 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1430 cents. How many 5-cent stamps are there?



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486    100 70 90 70 90 ( 420 )   140 80 90 130 110 ( 550 )   [[ 970 ]]