|
766 Stamp |
Name : _________________ |
||
|
There are 240 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1680 cents. How many 6-cent stamps are there? |
There are 230 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1170 cents. How many 3-cent stamps are there? |
|
+( ) |
|
( )+ |
|
++[[ ]]++ |
||
| 766 120 100 140 90 70 ( 520 ) 150 100 150 150 120 ( 670 ) [[ 1190 ]] | ||
|
|
||