There are 220 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1370 cents. How many 5-cent stamps are there?
There are 170 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 970 cents. How many 5-cent stamps are there?
There are 220 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 1140 cents. How many 7-cent stamps are there?
There are 130 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 830 cents. How many 5-cent stamps are there?
There are 200 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1160 cents. How many 7-cent stamps are there?
|
There are 190 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1240 cents. How many 4-cent stamps are there?
There are 160 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 940 cents. How many 5-cent stamps are there?
There are 220 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1360 cents. How many 7-cent stamps are there?
There are 240 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1500 cents. How many 3-cent stamps are there?
There are 250 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 950 cents. How many 3-cent stamps are there?
|