|
869 Age |
Name : _________________ |
||
|
Mary is 10 years older than Jerry. 7 years ago, Mary was 3 times as old as Jerry then. How old is Mary? |
Mary is 20 years older than Jerry. 8 years ago, Mary was 5 times as old as Jerry then. How old is Mary? |
|
+( ) |
|
( )+ |
|
++[[ ]]++ |
||
| 869 12 12 8 9 11 ( 52 ) 13 11 10 13 8 ( 55 ) [[ 107 ]] | ||
|
|
||