192  Stamp
How many stamps? 1

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There are 170 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1060 cents. How many 8-cent stamps are there?



There are 130 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 620 cents. How many 4-cent stamps are there?



There are 190 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1180 cents. How many 7-cent stamps are there?



There are 180 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1180 cents. How many 7-cent stamps are there?



There are 210 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 930 cents. How many 3-cent stamps are there?



There are 230 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1400 cents. How many 8-cent stamps are there?



There are 270 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1870 cents. How many 5-cent stamps are there?



There are 220 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1530 cents. How many 4-cent stamps are there?



There are 230 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 770 cents. How many 3-cent stamps are there?



There are 280 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1660 cents. How many 5-cent stamps are there?



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192    70 80 140 100 150 ( 540 )   120 140 90 150 150 ( 650 )   [[ 1190 ]]