Question

Christine gave 3/7 of the orange juice to her brother. She drank 1/4 of the remaining orange juice. What fraction of the orange juice had she left?

Answer 1

$answer \: is \: \frac{1}{7}$
$let \: the \: whole \: juice \: be \: 1 \\ 1 - \frac{3}{7 } = \frac{7 - 3}{7 } \\ remaining = \frac{4}{7} \\ \frac{4}{7} \times \frac{1}{4} = \frac{1}{7}$

Answer 2

Answer:

Left fraction = 5/28

Step-by-step explanation:

Let the total orange juice in a jug is x

Brother consumes 3/7 x

and the Christine take 1/4 of Remaining =  1/4 * ( x - 3/7 x)

The amount of juice left = x - { 3/7 x +  1/4 * ( x - 3/7 x)}

= x - { 3/7 x + x/4 - 4 x/28 )

= x - {12 x +7 x - 4 x / 28}

x - 23 x / 28

5/28 x

Left = 5/28

=