612  Stamp
How many stamps? 2

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There are 210 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1270 cents. How many 7-cent stamps are there?



There are 160 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 870 cents. How many 6-cent stamps are there?



There are 190 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 960 cents. How many 6-cent stamps are there?



There are 160 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 840 cents. How many 3-cent stamps are there?



There are 170 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 990 cents. How many 5-cent stamps are there?



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



There are 170 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 710 cents. How many 3-cent stamps are there?



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There are 190 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1190 cents. How many 5-cent stamps are there?



There are 210 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 700 cents. How many 3-cent stamps are there?



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612    110 70 100 70 100 ( 450 )   80 70 130 110 140 ( 530 )   [[ 980 ]]