|
506 Age |
Name : _________________ |
||
|
Mary is 15 years older than Jerry. 3 years ago, Mary was 6 times as old as Jerry then. How old is Mary? |
Mary is 9 years older than Jerry. 8 years ago, Mary was 4 times as old as Jerry then. How old is Mary? |
|
+( ) |
|
( )+ |
|
++[[ ]]++ |
||
| 506 6 7 9 12 12 ( 46 ) 11 7 7 5 11 ( 41 ) [[ 87 ]] | ||
|
|
||