|
853 Age |
Name : _________________ |
||
|
Mary is 12 years older than Jerry. 7 years ago, Mary was 7 times as old as Jerry then. How old is Mary? |
Mary is 8 years older than Jerry. 4 years ago, Mary was 3 times as old as Jerry then. How old is Mary? |
|
+( ) |
|
( )+ |
|
++[[ ]]++ |
||
| 853 9 9 7 7 12 ( 44 ) 8 8 12 10 8 ( 46 ) [[ 90 ]] | ||
|
|
||