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27 October, 05:42

A teacher needs 256 lengths of string cut to 40 cm each. if balls of string are 30 cm long how many balls will be needed

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  1. 27 October, 08:43
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    256 * 40 = 10,240 cm needed

    so if the balls are 30 cm each then

    10, 240 divided by 30 = 341.3

    so the teacher will need 342 balls.
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