9) C
Increase by 40% = 140% = 1.4
A ∝ 1
(1.4B)²
A ∝ 1
1.96B
The fraction (1 / 1.96) is just above 50% (50% of 1.96 = 0.98)
So the decrease in percentage terms of A must be just under 50%. So C is the answer.
9) C
Increase by 40% = 140% = 1.4
A ∝ 1
(1.4B)²
A ∝ 1
1.96B
The fraction (1 / 1.96) is just above 50% (50% of 1.96 = 0.98)
So the decrease in percentage terms of A must be just under 50%. So C is the answer.