632  Stamp
How many stamps? 1

Name : _________________

 

refresh

There are 220 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1430 cents. How many 8-cent stamps are there?



There are 190 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1270 cents. How many 5-cent stamps are there?



There are 230 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1660 cents. How many 8-cent stamps are there?



There are 220 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1470 cents. How many 7-cent stamps are there?



There are 220 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 990 cents. How many 5-cent stamps are there?



There are 230 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 1160 cents. How many 4-cent stamps are there?



There are 220 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1380 cents. How many 7-cent stamps are there?



There are 270 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 1050 cents. How many 3-cent stamps are there?



There are 200 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 1080 cents. How many 6-cent stamps are there?



There are 170 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1420 cents. How many 8-cent stamps are there?



+(         )

 

(         )+

++[[          ]]++

632    110 110 140 150 110 ( 620 )   150 140 150 80 110 ( 630 )   [[ 1250 ]]