SSC CGL 13 Jun 2019 Shift 1 Paper

Question : 54 of 100

Marks: +1, -0

If a : b = 5 : 7, then (5a - 3b) : (4a - 2b) is equal to:

Solution:

a=5 k ; b=7 k

\ {5 a-3 b}/{4 a-2 b}=\ {25 k-21 k}/{20 k-14 k}

=\ {4 k}/{6 k}=2: 3

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