982  Stamp
How many stamps? 1

Name : _________________

 

refresh

There are 270 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 1440 cents. How many 4-cent stamps are there?



There are 200 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1260 cents. How many 5-cent stamps are there?



There are 220 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1300 cents. How many 7-cent stamps are there?



There are 200 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 960 cents. How many 7-cent stamps are there?



There are 260 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1750 cents. How many 8-cent stamps are there?



There are 190 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1010 cents. How many 5-cent stamps are there?



There are 200 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1200 cents. How many 4-cent stamps are there?



There are 150 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 690 cents. How many 5-cent stamps are there?



There are 240 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1480 cents. How many 4-cent stamps are there?



There are 210 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1190 cents. How many 4-cent stamps are there?



+(         )

 

(         )+

++[[          ]]++

982    150 70 140 90 150 ( 600 )   130 100 90 110 140 ( 570 )   [[ 1170 ]]