Question

एक रक्तदान शिविर में किसी क्षेत्र विशेष के 300 सदस्य स्वेच्छया रक्तदान करते हैं।यदि उस क्षेत्र की कुल जनसंख्या के केवल 30% लोगो ने रक्तदान किया हो तो रक्तदान न करने वाले लोगों की संख्या ज्ञात कीजिये।

Answer 1

Given:

एक रक्तदान शिविर में किसी क्षेत्र विशेष के 300 सदस्य स्वेच्छया रक्तदान करते हैं।यदि उस क्षेत्र की कुल जनसंख्या के केवल 30% लोगो ने रक्तदान किया हो तो रक्तदान न करने वाले लोगों की संख्या ज्ञात कीजिये।

In a blood donation camp, 300 members of a particular area voluntarily donate blood. If only 30% of the total population of that area donated blood, then find the number of people who did not donate blood.

To find:

रक्तदान न करने वाले लोगों की संख्या ज्ञात कीजिये।

The number of people who did not donate blood.

Solution:

The total population of that particular area was = 300

The percentage of members from the total population who donated blood was = 30%

Let us consider that in the given area 100% population voluntarily donate blood in the blood donation camp.

Then,

The percentage of members who did not donate blood was,

= 100% - 30%

= 70%

Now,

The members who did not donate blood in the camp was,

= 70% of the total population

= 70% of 300

= $\frac{70}{100} \times 300$

= $70 \times 3$

= $\bold{210}$

Thus, the number of people who did not donate blood in the blood donation camp was → 210.

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