RRB Non Technical Model Papers 8 with solutions

Question : 65 of 100

Marks: +1, -0

If a : b = 3 : 4, find out

(6a^2 – 5b^2) : (a^2 – 2b^2).

Solution:

a = 3b/4(6a^2 – 5b^2) : (a^2 – 2b^2)

={13b^2}/8 :{23b^2}/16= 26 : 23

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