|
791 Stamp |
Name : _________________ |
||
|
There are 260 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1560 cents. How many 3-cent stamps are there? |
There are 190 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 1010 cents. How many 7-cent stamps are there? |
|
+( ) |
|
( )+ |
|
++[[ ]]++ |
||
| 791 130 100 110 150 100 ( 590 ) 110 120 100 110 150 ( 590 ) [[ 1180 ]] | ||
|
|
||