186  Stamp
How many stamps? 2

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There are 180 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1200 cents. How many 3-cent stamps are there?



There are 200 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 940 cents. How many 4-cent stamps are there?



There are 260 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 1080 cents. How many 5-cent stamps are there?



There are 170 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1120 cents. How many 8-cent stamps are there?



There are 240 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1360 cents. How many 4-cent stamps are there?



There are 230 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1170 cents. How many 3-cent stamps are there?



There are 200 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1320 cents. How many 4-cent stamps are there?



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There are 260 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1480 cents. How many 4-cent stamps are there?



There are 190 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1270 cents. How many 7-cent stamps are there?



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186    70 130 150 90 140 ( 580 )   150 70 110 150 130 ( 610 )   [[ 1190 ]]