Question

A school has 8 periods a day each of 45 minutes duration. How long would each

period be, if the school has 9 periods a day, assuming the number of school hours

to be the same ?​

Answer 1

Step-by-step explanation:

let the number of school hours be x

duration of one period in a day = 45 min

total number of periods before = 8

x= 8*45

x =360 min

if periods will increase to 9 from 8 and the school hrs are same then the duration of 1 period = 360min /9 = 40min

there fore the duration of one period will be 40 min

Answer 2

Answer:

inverse proportion

8 x 45 = 9 x y

8 x 45 / 9 = y

8 x 5 = y

y = 40

Each period will be of 40 minutes

Step-by-step explanation:

Hope it's helpful