|
970 Age |
Name : _________________ |
||
|
Mary is 18 years older than Jerry. 4 years ago, Mary was 4 times as old as Jerry then. How old is Mary? |
Mary is 16 years older than Jerry. 6 years ago, Mary was 5 times as old as Jerry then. How old is Mary? |
|
+( ) |
|
( )+ |
|
++[[ ]]++ |
||
| 970 10 11 13 9 9 ( 52 ) 10 6 10 13 11 ( 50 ) [[ 102 ]] | ||
|
|
||