Lilies 81910

There are twice as many pink water lilies in the pond as yellow water lilies, but twice as few as white water lilies. Which water lilies are the most and which are the fewest? How many times more white water lilies are there than yellow water lilies? How many pink water lilies are there if there are 35 in all?

Correct answer:

x = WHITE
y =  4
r =  10

Step-by-step explanation:

$$\begin{gathered} r=2z \\ r=b/2 \\ biele/white \\ x=WHITE \end{gathered}$$

$$\begin{gathered} b=2r \\ b=2\cdot (2z) \\ y=2\cdot 2=4 \end{gathered}$$

$$\begin{gathered} n=35 \\ n=r+z+b \\ n=r+r/2+2r \\ 35=r+r/2+2r \\ 35=r+r/2+2\cdot r \\ 7r=70 \\ r=\frac{70}{7}=10 \\ r=10 \end{gathered}$$

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