Two threads of lengths 50 cm and 1.5 m are joined together and then 20 cm is cut off from it. What is the length of the remaining thread?

148 cm

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150 cm

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180 cm

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202 cm

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Solution

The correct option is C 180 cm
$1 m = 100 c m$
$∴ 1.5 m = 1.5 \times 100 c m = 150 c m$

So, the total length of the thread is 150 + 50 = 200 cm.

When 20 cm is cut out, the length of the remaining thread is 200 - 20 = 180 cm.

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