650  Stamp
How many stamps? 1

Name : _________________

 

refresh

There are 180 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1110 cents. How many 5-cent stamps are there?



There are 200 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1050 cents. How many 8-cent stamps are there?



There are 170 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 750 cents. How many 3-cent stamps are there?



There are 210 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 940 cents. How many 5-cent stamps are there?



There are 200 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 1050 cents. How many 6-cent stamps are there?



There are 230 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1480 cents. How many 8-cent stamps are there?



There are 140 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 770 cents. How many 5-cent stamps are there?



There are 170 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 870 cents. How many 7-cent stamps are there?



There are 230 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 870 cents. How many 3-cent stamps are there?



There are 200 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 750 cents. How many 3-cent stamps are there?



+(         )

 

(         )+

++[[          ]]++

650    110 90 110 100 150 ( 560 )   110 70 90 140 150 ( 560 )   [[ 1120 ]]