|
153 Stamp |
Name : _________________ |
||
|
There are 260 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1670 cents. How many 6-cent stamps are there? |
There are 220 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1320 cents. How many 4-cent stamps are there? |
|
+( ) |
|
( )+ |
|
++[[ ]]++ |
||
| 153 150 100 110 150 100 ( 610 ) 110 120 70 120 100 ( 520 ) [[ 1130 ]] | ||
|
|
||