800  Stamp
How many stamps? 1

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There are 240 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 940 cents. How many 3-cent stamps are there?



There are 170 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 790 cents. How many 5-cent stamps are there?



There are 180 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 920 cents. How many 4-cent stamps are there?



There are 140 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 700 cents. How many 4-cent stamps are there?



There are 200 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 930 cents. How many 6-cent stamps are there?



There are 190 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 970 cents. How many 4-cent stamps are there?



There are 210 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 870 cents. How many 3-cent stamps are there?



There are 200 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 1110 cents. How many 6-cent stamps are there?



There are 160 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 680 cents. How many 3-cent stamps are there?



There are 210 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1320 cents. How many 5-cent stamps are there?



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800    130 110 80 70 110 ( 500 )   120 90 110 110 120 ( 550 )   [[ 1050 ]]