520  Stamp
How many stamps? 1

Name : _________________

refresh

There are 220 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 1260 cents. How many 3-cent stamps are there?



There are 190 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 780 cents. How many 3-cent stamps are there?



There are 260 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1820 cents. How many 8-cent stamps are there?



There are 230 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 1220 cents. How many 4-cent stamps are there?



There are 250 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1520 cents. How many 4-cent stamps are there?

There are 160 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1040 cents. How many 8-cent stamps are there?



There are 230 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 1300 cents. How many 6-cent stamps are there?



There are 190 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1110 cents. How many 4-cent stamps are there?



There are 170 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 760 cents. How many 3-cent stamps are there?



There are 210 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 1160 cents. How many 6-cent stamps are there?

+(         )

(         )+

++[[          ]]++