Question 879666
35 boy hours for 35 toys
1 boy hour per toy
65 toys need 65 boy hours

65 boys could pack 65 toys in 1 hour
65/3 boys could pack 65 toys in 3 hours
so we have  65/3=31 2/3 
boys don't come in 2/3 's .
So to get the job done we need 32 boys.