Question

· A school has 8 periods a day each of 45 minutes duration. How long would each period be, if the school has 9 period a day, assuming the number of school hours to be the same?​

Answer 1

Answer:

Let x minutes be the duration of period when the school has 9 periods a day. Then

Number of periods 8 9

Duration of periods (in minutes) 45 x

Clearly, more the periods, less will be the duration of the period.

So, it is a case of inverse proportion.

∴8×45=9×x

⇒x=

9

8×45

=40

Hence, the duration of period is 40 minutes

Answer 2

Answer:

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