598  Stamp
How many stamps? 1

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There are 180 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 980 cents. How many 7-cent stamps are there?



There are 200 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 1020 cents. How many 4-cent stamps are there?



There are 160 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 780 cents. How many 6-cent stamps are there?



There are 250 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 1330 cents. How many 4-cent stamps are there?



There are 190 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1430 cents. How many 7-cent stamps are there?



There are 160 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1110 cents. How many 6-cent stamps are there?



There are 280 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1770 cents. How many 4-cent stamps are there?



There are 170 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 620 cents. How many 4-cent stamps are there?



There are 230 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1420 cents. How many 5-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?



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598    110 90 100 140 140 ( 580 )   110 150 110 140 150 ( 660 )   [[ 1240 ]]