|
567 Stamp |
Name : _________________ |
||
|
There are 210 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1480 cents. How many 6-cent stamps are there? |
There are 170 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1220 cents. How many 8-cent stamps are there? |
|
+( ) |
|
( )+ |
|
++[[ ]]++ |
||
| 567 100 130 100 140 90 ( 560 ) 100 70 150 110 130 ( 560 ) [[ 1120 ]] | ||
|
|
||