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In a society of 80 resident families who subscribe newspapers, 60% of them subscribe The Hindu newspaper, 80% of them subscribe regional language newspaper and 70% of them subscribe TOI. How many families could, at the least, be subscribing to all the three newspapers
(a) 0%
(b) 5%
(c) 10%
(d) 20%
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Answer / gaurav nandal
The answer is 10%
ans = 100% -(100%-60%) -(100%-70%) -(100%-80%)
| Is This Answer Correct ? | 29 Yes | 4 No |
Answer / rockyrocz
Total no. Of families who take newspaper =80
1>>%age of family takes HINDU=60%
ie...60/100×80=48
2>>>%age of family takes REGIONAL=80%
ie..80/100×80=64
3>>>%age of family takes TOI=70%
ie...70/100×80=56
Now...
To find the common families out of these detaILS provided we simply take out H.C.F of thee result we got
Ie HCF of 48,64,56...=2x2x2=8
Therefore...80/8×100=10% of family takes all the three..
| Is This Answer Correct ? | 22 Yes | 3 No |
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