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?
Answer & explanation
Correct answer: option 3
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%