A is 25% more than B, and B is 40% less than C. If C is 20% more than D, then A is what percentage less than D?
Answer & explanation
Correct answer: option 1
25% = \(\frac{1}{4}\)
40% = \(\frac{2}{5}\)
20% = \(\frac{1}{5}\)
A : D
25% ⇒ 5 : 4
40% ⇒ 3 : 5
20% ⇒ 6 : 5
5 × 3 × 6 : 4 × 5 × 5
9 : 10 = 1 (difference)
A is = \(\frac{1}{10}\) × 100 = 10 % less than D.