|
620 Age |
Name : _________________ |
||
|
Mary is 20 years older than Jerry. 4 years ago, Mary was 6 times as old as Jerry then. How old is Mary? |
Mary is 24 years older than Jerry. 7 years ago, Mary was 5 times as old as Jerry then. How old is Mary? |
|
+( ) |
|
( )+ |
|
++[[ ]]++ |
||
| 620 8 7 12 7 8 ( 42 ) 13 8 6 9 9 ( 45 ) [[ 87 ]] | ||
|
|
||