|
692 Stamp |
Name : _________________ |
||
|
There are 230 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 1140 cents. How many 4-cent stamps are there? |
There are 220 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1440 cents. How many 7-cent stamps are there? |
|
+( ) |
|
( )+ |
|
++[[ ]]++ |
||
| 692 120 140 110 150 70 ( 590 ) 120 100 70 100 110 ( 500 ) [[ 1090 ]] | ||
|
|
||