If in a cuboid, length is dreased by 11\(\frac{1}{9}\)% , breadth is decreased by 12.5% and height is decreased by 10%. What is the effect on original volume? 

30%

11 \(\frac{1}{9}\)% = \(\frac{1}{9}\)

12.5 % = \(\frac{1}{8}\)

10 % = \(\frac{1}{10}\)

                Before   :     After

Length          9      :       8

Breath          8       :       7

Height          10     :       9     

Vol.(LBH)      10     :      7

Vol decreased by = \(\frac{10 - 7}{10}\) × 100 = 30%