622  Stamp
How many stamps? 1

Name : _________________

refresh

There are 210 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1460 cents. How many 6-cent stamps are there?



There are 190 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 990 cents. How many 6-cent stamps are there?



There are 240 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1770 cents. How many 7-cent stamps are there?



There are 200 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1540 cents. How many 8-cent stamps are there?



There are 180 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 620 cents. How many 3-cent stamps are there?

There are 160 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1160 cents. How many 8-cent stamps are there?



There are 220 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 760 cents. How many 3-cent stamps are there?



There are 130 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 860 cents. How many 8-cent stamps are there?



There are 160 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 760 cents. How many 7-cent stamps are there?



There are 240 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 2040 cents. How many 8-cent stamps are there?

+(         )

(         )+

++[[          ]]++