The sum of the incomes of a and b is more than that of c and d taken together. The sum of the incomes of a and c is the same as that of b and d taken together. Moreover, a earns half as much as the sum of the incomes of b and d. 66. Whose income is the highest ?
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Answer:
b has highest income
Step-by-step explanation:
a + b > c + d
a + c = b + d
a =
=> b+d = 2a
a+c = 2a
c = a
a + b > a + d
b > d
then let say b = d+x ( as b>d so x is +ve)
=> d = b -x
=> a +c = b + b - x
a = c
=> 2a = 2b - x
=> 2b = 2a + x
=> b = a + x/2
=> b> a
a = c
b > c
it means b has highest income
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