501 WorkRate1 |
Name : _________________ |
||
12 people can do a job in 10 days. How many days would it take if there were only 4 people? |
63 people can do a job in 11 days. How many days would it take if there were only 9 people? |
+( ) |
|
( )+ |
++[[ ]]++ |
||
501 30 44 20 22 42 ( 158 ) 77 40 60 21 40 ( 238 ) [[ 396 ]] | ||
|