|
639 Age |
Name : _________________ |
||
|
Mary is 20 years older than Jerry. 3 years ago, Mary was 6 times as old as Jerry then. How old is Mary? |
Mary is 6 years older than Jerry. 3 years ago, Mary was 4 times as old as Jerry then. How old is Mary? |
|
+( ) |
|
( )+ |
|
++[[ ]]++ |
||
| 639 7 12 13 5 12 ( 49 ) 5 6 8 10 8 ( 37 ) [[ 86 ]] | ||
|
|
||