620  Stamp
How many stamps? 2

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There are 160 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1080 cents. How many 8-cent stamps are there?



There are 170 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 940 cents. How many 6-cent stamps are there?



There are 160 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 960 cents. How many 3-cent stamps are there?



There are 210 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 830 cents. How many 3-cent stamps are there?



There are 130 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 860 cents. How many 7-cent stamps are there?



There are 180 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1170 cents. How many 8-cent stamps are there?



There are 120 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 460 cents. How many 3-cent stamps are there?



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There are 220 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 990 cents. How many 5-cent stamps are there?



There are 220 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1190 cents. How many 5-cent stamps are there?



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620    110 90 80 110 80 ( 470 )   90 70 90 110 130 ( 490 )   [[ 960 ]]