|
300 Age |
Name : _________________ |
||
|
Mary is 4 years older than Jerry. 8 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 4 times as old as Jerry then. How old is Mary? |
|
+( ) |
|
( )+ |
|
++[[ ]]++ |
||
| 300 10 10 11 9 10 ( 50 ) 10 9 12 10 11 ( 52 ) [[ 102 ]] | ||
|
|
||