3kg of rice can be served to 20 people. How much rice is required to serve 50 such people?

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6.5kg

4.5kg

5.5kg

7.5kg

answer is D.

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Detailed Solution

Concept- We employ unitary approaches to solve problems of this nature. In order to calculate the amount of rice needed for 50 people, we must first determine how many kilograms of rice are needed for each individual, assuming that three kilograms of rice may feed 20 people.
Given that 20 persons can be fed with 3 kg of rice.
to determine the necessary response to a situation. We'll employ a unitary approach.
In this procedure, we first determine how many kilograms of rice are needed to feed one person.
To do this, we divide the 3 kg of rice into 20.
Another way to write it is: 3 kg of rice will be enough to feed 20 people.

of rice will be enough to feed 1 person.
So, how much rice is needed for 50 of these people. The aforementioned equation can be calculated using 50.
Rice needed for 50 individuals is calculated as follows:
Question Image

As a result, we can see from the above that 7.5kg of rice is needed to serve 50 people.
Hence, the correct answer is option 4.

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