Question

47 The weight of a container completely filled with water is
2.25 kg. The container weights 0.77 kg when its 0.2 part
is filled with water. The weight of the container when 0.4
part of it is filled with water, is
(A) 0.74 kg (B) 1.14 kg (C) 1.88 kg (D) 0.40 kg​

Answer 1

Step-by-step explanation:

Description for Correct answer:

Assume weight of water = x

weight of container = y

so,

Total weight of container when it is filled with water

xx+y=2.25kg......(i)

When it is filled 2/10th

x×210+y=0.77kg.....(ii)

After solving both eqn

x=7320kg

y=0.40kg

Now, The weight (in kg) of the container when 0.4 part if its is filled with water is

3720×410+0.40

=1.14kg