229  Stamp
How many stamps? 1

Name : _________________

refresh

There are 180 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1080 cents. How many 7-cent stamps are there?



There are 270 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 1230 cents. How many 5-cent stamps are there?



There are 190 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 750 cents. How many 3-cent stamps are there?



There are 250 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1470 cents. How many 5-cent stamps are there?



There are 240 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1260 cents. How many 3-cent stamps are there?

There are 120 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 630 cents. How many 4-cent stamps are there?



There are 200 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 910 cents. How many 5-cent stamps are there?



There are 190 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1360 cents. How many 4-cent stamps are there?



There are 150 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 800 cents. How many 3-cent stamps are there?



There are 170 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 790 cents. How many 3-cent stamps are there?

+(         )

(         )+

++[[          ]]++