|
348 Stamp |
Name : _________________ |
||
|
There are 240 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 1230 cents. How many 4-cent stamps are there? |
There are 210 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1100 cents. How many 6-cent stamps are there? |
|
+( ) |
|
( )+ |
|
++[[ ]]++ |
||
| 348 150 120 130 80 130 ( 610 ) 130 150 90 110 140 ( 620 ) [[ 1230 ]] | ||
|
|
||