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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. 204

D. 488

Solution:

Le the required time be x seconds.
More metres, More time (Direct Proportion)

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

∴ Required time = 195 sec (approximately)

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