|
138 Age |
Name : _________________ |
||
|
Mary is 12 years older than Jerry. 4 years ago, Mary was 3 times as old as Jerry then. How old is Mary? |
Mary is 12 years older than Jerry. 4 years ago, Mary was 7 times as old as Jerry then. How old is Mary? |
|
+( ) |
|
( )+ |
|
++[[ ]]++ |
||
| 138 10 8 5 6 10 ( 39 ) 6 7 6 11 11 ( 41 ) [[ 80 ]] | ||
|
|
||