Granddad

Grandfather has three barrels, each with a capacity of 2 hectoliters, in the garden. If two barrels are full and the third is filled with water to the half, how many times can he fill 10L? How long does water take to irrigate the garden, 125 liters a day?

Correct answer:

a =  50
b =  4

Step-by-step explanation:

$$\begin{gathered} n=2+1/2=\frac{5}{2}=2\frac{1}{2}=2.5 \\ V=n\cdot 200=2.5\cdot 200=500\text{l} \\ {V}_{10}=10\text{l} \\ a=V/V_{10}=500/10=50 \end{gathered}$$

$$\begin{gathered} D=125\text{l} \\ b=V/D=500/125=4 \end{gathered}$$

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