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1. An industrial loom weaves 0.128 metres of cloth every second. Approximately, how many seconds will it take for the loom to weave 25 metres of cloth ?

A. 178

B. 195

C. 24

D. 488

Solution:

Let the required time be x seconds
Then,
More metres, More time (direct proportion)

\begin{aligned} ∴ 0.128 : 25 :: 1 : x \\ \Leftrightarrow x = \frac{25}{0.128} \\ \Leftrightarrow x = \frac{25 \times 1000}{128} \\ \Leftrightarrow x = 195.31 \end{aligned}

`
∴ Required time =195 seconds (approx)

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