|
301 WorkRate1 |
Name : _________________ |
||
|
21 people can do a job in 6 days. How many days would it take if there were only 3 people? |
28 people can do a job in 8 days. How many days would it take if there were only 7 people? |
|
+( ) |
|
( )+ |
|
++[[ ]]++ |
||
| 301 42 24 30 36 28 ( 160 ) 32 49 15 70 10 ( 176 ) [[ 336 ]] | ||
|
|
||