165  Stamp
How many stamps? 1

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There are 230 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1170 cents. How many 3-cent stamps are there?



There are 180 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 740 cents. How many 3-cent stamps are there?



There are 230 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 970 cents. How many 5-cent stamps are there?



There are 140 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 670 cents. How many 3-cent stamps are there?



There are 200 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 920 cents. How many 7-cent stamps are there?



There are 170 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 750 cents. How many 5-cent stamps are there?



There are 170 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 740 cents. How many 4-cent stamps are there?



There are 230 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 1110 cents. How many 6-cent stamps are there?



There are 220 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1680 cents. How many 8-cent stamps are there?



There are 220 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1150 cents. How many 7-cent stamps are there?



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165    150 130 140 90 80 ( 590 )   70 110 140 140 90 ( 550 )   [[ 1140 ]]