Ring : Finger ::
A ring is an ornament worn around a finger. The matching pair should be an ornament worn around a limb in the same encircling way. A bangle is worn around the arm or wrist, so bangle : arm mirrors ring : finger.
Bangle : Arm is the answer.
If the price of a commodity increases by 25%, by what percentage should the consumption be reduced to keep the expenditure the same?