Solution
Let the number be $$x$$
=> $$\frac{5}{6} \times \frac{7}{6} \times x = 140$$
=> $$x = 140 \times \frac{36}{35} = 4 \times 36$$
=> $$x=144$$
$$\therefore$$ 9/4th of the number = $$\frac{9}{4} \times 144$$
= $$9 \times 36 = 324$$
=> Ans - (D)
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