Question

A beaker is 4/7 filled with water.Another 12 litres of water is needed to fill the beaker to its brim.What is the capacity of the beaker?

Answer 1

Beaker is 4/7 filled with
water. Beaker is empty 3/7. 3/7 contains 12 ltr water now 1 cointains 12/3*7=28 ltr water. Therefore the beaker's capacity is 28 ltr

Answer 2

Answer:

28 liters

Step-by-step explanation:

Let the capacity of the beaker be x

A beaker is 4/7 filled with water

So, amount of water in the beaker = $\frac{4}{7}x$

Now 12 liters of water is needed to fill the beaker to its brim.

So,  $\frac{4}{7}x+12=x$

$12=x-\frac{4}{7}x$

$12=\frac{7x-4x}{7}$

$12=\frac{3x}{7}$

$12 \times 7=3x$

$84=3x$

$\frac{84}{3}=x$

$28=x$

Hence the capacity of the beaker is 28 liters.