|
307 WorkRate1 |
Name : _________________ |
||
|
15 people can do a job in 7 days. How many days would it take if there were only 3 people? |
21 people can do a job in 8 days. How many days would it take if there were only 7 people? |
|
+( ) |
|
( )+ |
|
++[[ ]]++ |
||
| 307 35 42 24 32 27 ( 160 ) 24 42 12 72 42 ( 192 ) [[ 352 ]] | ||
|
|
||