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The width of a cloth is 170 cm. Calculate the length of the cloth required to make 25 diapers, if each diaper requires a piece of cloth of size $50 cm$ by $17 cm$ .

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100 cm

115 cm

125 cm

150 cm

answer is C.

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Detailed Solution

Given the width of a cloth is 170 cm and each diaper requires a piece of cloth of size 50 cm by 17 cm.
Assume, length of the cloth = l.

A r e a = l e n g t h × b r e a d t h

Number of diaper = total area of cloth Area of cloth used in a diaper

25 = 170 × l 50 × 17

⇒ l = 25 × 5 ⇒ l = 125 c m

The length of the cloth is 125 cm.
Hence, option 3 is correct.

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