739  Stamp
How many stamps? 1

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There are 250 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 1010 cents. How many 3-cent stamps are there?



There are 210 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 960 cents. How many 4-cent stamps are there?



There are 170 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1120 cents. How many 7-cent stamps are there?



There are 260 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 1450 cents. How many 6-cent stamps are there?



There are 180 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 820 cents. How many 4-cent stamps are there?



There are 190 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1590 cents. How many 8-cent stamps are there?



There are 200 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1520 cents. How many 5-cent stamps are there?



There are 170 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1140 cents. How many 6-cent stamps are there?



There are 240 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 980 cents. How many 5-cent stamps are there?



There are 260 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 1000 cents. How many 3-cent stamps are there?



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739    120 90 100 150 80 ( 540 )   120 70 110 130 150 ( 580 )   [[ 1120 ]]