If the average income of a family of ‘x’ members is Rs. 25000 while average income of another family of 6 members is Rs. 32000, then find the value of ‘x’ if the average income of both families is Rs. 28000
Answer with explanationAnswer: Option C
Avg income of 1st family=25
Avg income of 2nd family=32
Both the families=28
Ratio of number of family members of 1stto 2ndis 4 : 3. In the second family, there are 6 members, hence in the 1stfamily there are 8 members, only then the ratio = 8 : 6 or 4 : 3 hence x = 8.
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