|
104 Stamp |
Name : _________________ |
||
|
There are 200 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1400 cents. How many 8-cent stamps are there? |
There are 200 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1500 cents. How many 8-cent stamps are there? |
|
+( ) |
|
( )+ |
|
++[[ ]]++ |
||
| 104 150 130 140 130 90 ( 640 ) 100 150 100 100 100 ( 550 ) [[ 1190 ]] | ||
|
|
||