|
989 Age |
Name : _________________ |
||
|
Mary is 15 years older than Jerry. 6 years ago, Mary was 4 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? |
|
+( ) |
|
( )+ |
|
++[[ ]]++ |
||
| 989 11 10 12 7 7 ( 47 ) 8 8 9 7 9 ( 41 ) [[ 88 ]] | ||
|
|
||