383  Stamp
How many stamps? 1

Name : _________________

 

refresh

There are 220 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 920 cents. How many 3-cent stamps are there?



There are 180 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 860 cents. How many 4-cent stamps are there?



There are 240 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 1080 cents. How many 5-cent stamps are there?



There are 200 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1040 cents. How many 6-cent stamps are there?



There are 130 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 690 cents. How many 3-cent stamps are there?



There are 150 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 690 cents. How many 3-cent stamps are there?



There are 280 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 1140 cents. How many 5-cent stamps are there?



There are 210 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 1140 cents. How many 6-cent stamps are there?



There are 240 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1640 cents. How many 6-cent stamps are there?



There are 190 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1390 cents. How many 5-cent stamps are there?



+(         )

 

(         )+

++[[          ]]++

383    90 110 120 120 70 ( 510 )   70 150 90 140 80 ( 530 )   [[ 1040 ]]