|
228 Stamp |
Name : _________________ |
||
|
There are 170 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1180 cents. How many 4-cent stamps are there? |
There are 220 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1460 cents. How many 7-cent stamps are there? |
|
+( ) |
|
( )+ |
|
++[[ ]]++ |
||
| 228 70 100 110 100 110 ( 490 ) 140 140 110 100 110 ( 600 ) [[ 1090 ]] | ||
|
|
||