|
988 Stamp |
Name : _________________ |
||
|
There are 210 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 990 cents. How many 5-cent stamps are there? |
There are 130 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 840 cents. How many 6-cent stamps are there? |
|
+( ) |
|
( )+ |
|
++[[ ]]++ |
||
| 988 150 110 140 110 110 ( 620 ) 70 130 130 150 130 ( 610 ) [[ 1230 ]] | ||
|
|
||