Our horses

Our horses have a supply of oats for 12 days. Our neighbour has half as much oats as we do, but twice as many horses.

a) How many days would our supply of oats last our neighbour's horses?
b) How many days would our neighbour's supply of oats last our horses?
c) How many days would the neighbour's supply of oats last his horses?

Final Answer:

a =  18 d
b =  6 d
c =  9 d

Step-by-step explanation:

$$\begin{gathered} n_1=1111 \\ {z}_1=12\cdot n_1=12\cdot 1111=13332 \\ {z}_2=z_1+z_1/2=13332+13332/2=19998 \\ {n}_2=2\cdot n_1=2\cdot 1111=2222 \\ a=z_2/n_1=19998/1111=18\text{d} \end{gathered}$$

$b=z_1/n_2=13332/2222=6\text{d}$

$c=z_2/n_2=19998/2222=9\text{d}$

Try another example