|
412 Age |
Name : _________________ |
||
|
Mary is 9 years older than Jerry. 7 years ago, Mary was 4 times as old as Jerry then. How old is Mary? |
Mary is 10 years older than Jerry. 4 years ago, Mary was 3 times as old as Jerry then. How old is Mary? |
|
+( ) |
|
( )+ |
|
++[[ ]]++ |
||
| 412 10 9 6 10 9 ( 44 ) 9 5 14 13 11 ( 52 ) [[ 96 ]] | ||
|
|
||