\[
w \propto d
\]
When $d=35$, the value of $w$ is 133
Work out the value of $w$ when $d=25$
Give any decimal answers to 1 d.p.

Answer

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Answer

$\boxed{95.0}$ is the value of $w$ when $d = 25$.

Steps

Step 1 ：Given that $w \propto d$, which means $w = k \times d$, where $k$ is a constant of proportionality.

Step 2 ：Using the given values, when $d=35$, the value of $w$ is 133. So, $133 = k \times 35$.

Step 3 ：Solve for $k$: $k = \frac{133}{35} = 3.8$.

Step 4 ：Now, we need to find the value of $w$ when $d = 25$. Using the formula $w = k \times d$, we have $w = 3.8 \times 25$.

Step 5 ：Calculate the value of $w$: $w = 95.0$.

Step 6 ：$\boxed{95.0}$ is the value of $w$ when $d = 25$.