|
788 Age |
Name : _________________ |
||
|
Mary is 10 years older than Jerry. 7 years ago, Mary was 3 times as old as Jerry then. How old is Mary? |
Mary is 12 years older than Jerry. 6 years ago, Mary was 3 times as old as Jerry then. How old is Mary? |
|
+( ) |
|
( )+ |
|
++[[ ]]++ |
||
| 788 12 13 9 10 6 ( 50 ) 12 8 10 10 10 ( 50 ) [[ 100 ]] | ||
|
|
||