595  Stamp
How many stamps? 1

Name : _________________

 

refresh

There are 200 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 760 cents. How many 3-cent stamps are there?



There are 220 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1680 cents. How many 8-cent stamps are there?



There are 140 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 750 cents. How many 5-cent stamps are there?



There are 210 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1610 cents. How many 7-cent stamps are there?



There are 190 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1040 cents. How many 6-cent stamps are there?



There are 250 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1950 cents. How many 7-cent stamps are there?



There are 160 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 920 cents. How many 5-cent stamps are there?



There are 230 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 1290 cents. How many 7-cent stamps are there?



There are 250 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 1360 cents. How many 4-cent stamps are there?



There are 210 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 910 cents. How many 5-cent stamps are there?



+(         )

 

(         )+

++[[          ]]++

595    120 140 90 140 140 ( 630 )   150 100 150 130 140 ( 670 )   [[ 1300 ]]