773  Stamp
How many stamps? 1

Name : _________________

 

refresh

There are 250 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1610 cents. How many 8-cent stamps are there?



There are 210 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 870 cents. How many 6-cent stamps are there?



There are 170 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1270 cents. How many 7-cent stamps are there?



There are 270 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1750 cents. How many 6-cent stamps are there?



There are 180 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1220 cents. How many 8-cent stamps are there?



There are 220 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1420 cents. How many 6-cent stamps are there?



There are 210 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1340 cents. How many 7-cent stamps are there?



There are 190 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 870 cents. How many 4-cent stamps are there?



There are 210 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1330 cents. How many 8-cent stamps are there?



There are 260 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 1140 cents. How many 3-cent stamps are there?



+(         )

 

(         )+

++[[          ]]++

773    120 80 90 140 70 ( 500 )   120 80 80 140 140 ( 560 )   [[ 1060 ]]