Question

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 1

Answer:

45 minutes

Step-by-step explanation:

If the number of periods decreases, length of each period increases. So, we will use indirect proportionality, here.

9 periods = 40 minutes

1 period = 9 × 40 minutes

8 periods = (9 × 40)/8 minutes = 45 minutes

Answer 2

Answer:

45 min.

Step-by-step explanation:

if we multiply 8 by 45 we will 360

and while multiplying 45 by 9 we will get 360 so the answer is 45