843  Stamp
How many stamps? 1

Name : _________________

 

refresh

There are 200 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1360 cents. How many 5-cent stamps are there?



There are 190 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 640 cents. How many 3-cent stamps are there?



There are 250 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1520 cents. How many 4-cent stamps are there?



There are 150 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 990 cents. How many 5-cent stamps are there?



There are 180 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1170 cents. How many 5-cent stamps are there?



There are 140 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 780 cents. How many 7-cent stamps are there?



There are 210 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1230 cents. How many 7-cent stamps are there?



There are 180 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 1090 cents. How many 3-cent stamps are there?



There are 200 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 960 cents. How many 4-cent stamps are there?



There are 210 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1540 cents. How many 7-cent stamps are there?



+(         )

 

(         )+

++[[          ]]++

843    80 120 120 90 90 ( 500 )   90 130 70 120 140 ( 550 )   [[ 1050 ]]