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When a quantity is to be DECREASED by a given ratio, the rule is to multiply by:
AThe lesser ratio
BThe greater ratio
CThe reciprocal of the lesser ratio
DZero
Answer & Solution
Correct answer: A. The lesser ratio
1. Per OCR: "When the quantity is decreased by given ratio multiply the quantity by lesser ratio."
2. Inverse of the increase rule.
3. Result is smaller than original quantity.
_Source: ICMAI BoS CMA Foundation Paper 3 (FBMS) — Paper3_07042026.pdf, Module 1 §1.1 (page 11)_