|
517 Age |
Name : _________________ |
||
|
Mary is 18 years older than Jerry. 4 years ago, Mary was 7 times as old as Jerry then. How old is Mary? |
Mary is 8 years older than Jerry. 3 years ago, Mary was 3 times as old as Jerry then. How old is Mary? |
|
+( ) |
|
( )+ |
|
++[[ ]]++ |
||
| 517 7 13 9 7 9 ( 45 ) 7 8 11 10 13 ( 49 ) [[ 94 ]] | ||
|
|
||