173  Stamp
How many stamps? 1

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There are 190 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1190 cents. How many 5-cent stamps are there?



There are 220 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 1240 cents. How many 6-cent stamps are there?



There are 220 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1360 cents. How many 5-cent stamps are there?



There are 210 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1330 cents. How many 6-cent stamps are there?



There are 200 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1150 cents. How many 5-cent stamps are there?



There are 160 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1050 cents. How many 6-cent stamps are there?



There are 160 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 950 cents. How many 5-cent stamps are there?



There are 230 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1540 cents. How many 6-cent stamps are there?



There are 250 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1640 cents. How many 8-cent stamps are there?



There are 220 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1160 cents. How many 4-cent stamps are there?



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173    110 140 90 140 150 ( 630 )   70 110 150 130 150 ( 610 )   [[ 1240 ]]