765  Stamp
How many stamps? 2

Name : _________________

 

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There are 240 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1800 cents. How many 8-cent stamps are there?



There are 170 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1080 cents. How many 6-cent stamps are there?



There are 160 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1100 cents. How many 8-cent stamps are there?



There are 140 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 980 cents. How many 5-cent stamps are there?



There are 160 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1020 cents. How many 3-cent stamps are there?



There are 190 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 810 cents. How many 5-cent stamps are there?



There are 220 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1240 cents. How many 5-cent stamps are there?



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There are 160 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 880 cents. How many 7-cent stamps are there?



There are 160 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 590 cents. How many 4-cent stamps are there?



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765    120 110 100 70 70 ( 470 )   120 150 130 100 110 ( 610 )   [[ 1080 ]]