A school has 9 periods a day each of 40 minutes duration. How long wou

1.	A school has 9 periods a day each of 40 minutes duration. How long would each period be, if the school has 8 periods a day, assuming the number of school hours to be the same?
Answer» Lesser the number of periods in a day, more the duration of them. So, it is an inverse proportion. Let the required duration be x. ⇒ 9 × 40 = 8 × x ⇒ x = \(\frac{9\,\times\,40}{8}\) = 45 days

A school has 9 periods a day each of 40 minutes duration. How long would each period be, if the school has 8 periods a day, assuming the number of school hours to be the same?

Answer»

Lesser the number of periods in a day, more the duration of them. So, it is an inverse proportion.

Let the required duration be x.

⇒ 9 × 40 = 8 × x

⇒ x = \(\frac{9\,\times\,40}{8}\) = 45 days