20 kg of rice is needed for a family of 4 members, how many kg of rice is required if the number of members in the house increases by 8?

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Solution

Since, the quantity of rice is directly proportional to members of the family.
Let x be the amount of rice required for (4 + 8) = 12 members.
Then $4 : 20 :: 12 : x$
$4 \times x = 20 \times 12$
$x = \frac{240}{4}$
$x = 60$
Therefore, 12 members will require 60 kg of rice.

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20 kg of rice is needed for a family of 4 members, how many kg of rice is required if the number of members in the house increases by 8?

Since, the quantity of rice is directly proportional to members of the family. Let x be the amount of rice required for (4 + 8) = 12 members. Then 4:20::12:x 4×x=20×12 x=2404 x=60 Therefore, 12 members will require 60 kg of rice.

Since, the quantity of rice is directly proportional to members of the family.
Let x be the amount of rice required for (4 + 8) = 12 members.
Then $4 : 20 :: 12 : x$
$4 \times x = 20 \times 12$
$x = \frac{240}{4}$
$x = 60$
Therefore, 12 members will require 60 kg of rice.