Question

6. A school has 8 periods a day of 45 minutes each. If the school decides to have 9 periods a day without increasing the number of school hours, how long would each period be?​

Answer 1

Answer:

40 minutes

Step-by-step explanation:

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Answer 2

Answer:

Step-by-step explanation:

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= 8×45/ 9  =40