Question

A class has seven periods in a day. if the total time for seven periods is 5 1/4 hours. how long is one period?​

Answer 1

$Number \: of \: periods = 7 \: and \: 1$

$Number \: of \: duration = 5 \times \frac{1}{4} = \frac{21}{4} and \: x$

$x1y1 = x2y2$

$7 \times \frac{21}{4} = 1 \times x$

$x = \frac{ 7 \times 21}{4 \times 1}$

$x = 36.75$

Answer 2

Given,

a class has 7 periods in a day and total time is

$5 \frac{1}{4} hrs \: = > \: \frac{21}{4} hrs$

find time for one period.

Solution :-

let time for one period be x .

then,

$\rm⇢ \: \: x = \frac{ \frac{21}{4} }{7}$

$\rm⇢ \: \: x = \frac{21}{4} \times \frac{1}{7}$

$\rm⇢ \: \: x = \frac{3}{4} hrs \: = 45min$