164  Stamp
How many stamps? 1

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There are 210 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1170 cents. How many 5-cent stamps are there?



There are 160 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 790 cents. How many 4-cent stamps are there?



There are 200 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 850 cents. How many 4-cent stamps are there?



There are 210 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 1180 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?



There are 200 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1150 cents. How many 4-cent stamps are there?



There are 130 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 700 cents. How many 4-cent stamps are there?



There are 160 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 940 cents. How many 5-cent stamps are there?



There are 120 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 410 cents. How many 3-cent stamps are there?



There are 220 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1600 cents. How many 8-cent stamps are there?



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164    150 110 150 100 120 ( 630 )   130 70 90 70 140 ( 500 )   [[ 1130 ]]