He needs to work 22 hours :)
4+7=11 i.e. The whole.
7/11=28
1/11=4
Goats are 4/11 therefore
4 x 4= Ans
All the animals add up to 44 and if you check w/ 7/11 it is correct.
I hope this helps you
2pi.r=C
r=C/2pi
6hrs = 360 minutes
360/7.5 = 48 bottles required
500g = 0.5kg
48x0.5 = 24 kg
24x 5 = 120p