765  Stamp
How many stamps? 2

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There are 210 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1410 cents. How many 8-cent stamps are there?



There are 280 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1570 cents. How many 7-cent stamps are there?



There are 200 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 910 cents. How many 5-cent stamps are there?



There are 200 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 850 cents. How many 4-cent stamps are there?



There are 170 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 810 cents. How many 6-cent stamps are there?



There are 170 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 870 cents. How many 3-cent stamps are there?



There are 170 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1160 cents. How many 8-cent stamps are there?



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There are 120 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 570 cents. How many 6-cent stamps are there?



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



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765    120 150 110 150 100 ( 630 )   80 120 80 70 70 ( 420 )   [[ 1050 ]]