292  Stamp
How many stamps? 1

Name : _________________

refresh

There are 170 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1030 cents. How many 5-cent stamps are there?



There are 150 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 650 cents. How many 3-cent stamps are there?



There are 190 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1300 cents. How many 6-cent stamps are there?



There are 200 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 800 cents. How many 3-cent stamps are there?



There are 170 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 630 cents. How many 3-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 140 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 720 cents. How many 3-cent stamps are there?



There are 160 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1040 cents. How many 7-cent stamps are there?



There are 210 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 1020 cents. How many 3-cent stamps are there?



There are 200 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1660 cents. How many 7-cent stamps are there?

+(         )

(         )+

++[[          ]]++