691  Stamp
How many stamps? 2

Name : _________________

 

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There are 240 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1680 cents. How many 5-cent stamps are there?



There are 170 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1100 cents. How many 6-cent stamps are there?



There are 230 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1720 cents. How many 8-cent stamps are there?



There are 230 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1370 cents. How many 7-cent stamps are there?



There are 210 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1140 cents. How many 7-cent stamps are there?



There are 180 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 860 cents. How many 6-cent stamps are there?



There are 210 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1570 cents. How many 7-cent stamps are there?



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There are 260 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1950 cents. How many 6-cent stamps are there?



There are 190 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 680 cents. How many 4-cent stamps are there?



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691    120 90 110 150 100 ( 570 )   70 110 150 130 110 ( 570 )   [[ 1140 ]]