559 Stamp |
Name : _________________ |
||
There are 190 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1310 cents. How many 5-cent stamps are there? |
There are 230 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 1160 cents. How many 4-cent stamps are there? |
+( ) |
|
( )+ |
++[[ ]]++ |
||
559 100 130 100 110 140 ( 580 ) 110 150 90 140 90 ( 580 ) [[ 1160 ]] | ||
|