2. In a survey relating to reading habits of people in a town it was observed that 60% read
magazine A, 50% magazine B, 50% magazine C, 30% A and B, 20% B and C, 30% C and
A and 10% all the threes. In the fitness of the thing, state (i) what percentage read exactly
two magazines ? (ii) what percentage do not read any of the threes?
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Answers
Answered by
1
Answer:
(1) 100%
(2) 60%
Step-by-step explanation:
A 60% means 60/100 = 3/5
B 50% means 50/100= 1/2
C 50% means = 50/100 =1/2
now add them all 3/5+1/2+1/2 = 16/10 means we can say total people is 16 and magazine readers in this is 10
then 2nd answer is (16-10)*100/10 = 60% NOW,
A+B = 30% = 3/10
B+C = 20% = 1/5
C+A = 30% = 3/10
now add all them = 3/10+1/5+3/10 = 8/10
means all magazine readers we have is 10 (from upper equestrian is also same) in which exactly two magazine readers is 8 but we know that all members are 16 then we need to make a percentage from use of total people...so 1st answer is --
(16-8)*100/8 = 100% is reading both magazines..
Answered by
1
Step-by-step explanation:
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