|
897 Stamp |
Name : _________________ |
||
|
There are 210 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1470 cents. How many 6-cent stamps are there? |
There are 240 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 990 cents. How many 3-cent stamps are there? |
|
+( ) |
|
( )+ |
|
++[[ ]]++ |
||
| 897 140 100 110 120 120 ( 590 ) 150 90 90 120 110 ( 560 ) [[ 1150 ]] | ||
|
|
||