|
584 Stamp |
Name : _________________ |
||
|
There are 170 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 900 cents. How many 6-cent stamps are there? |
There are 260 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1520 cents. How many 4-cent stamps are there? |
|
+( ) |
|
( )+ |
|
++[[ ]]++ |
||
| 584 110 130 140 140 140 ( 660 ) 140 110 150 110 90 ( 600 ) [[ 1260 ]] | ||
|
|
||