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  1. The ratio of two numbers is 4 : 5 and their L.C.M. is 120. The numbers are
    1. 30, 40
    2. 40, 32
    3. 24, 30
    4. 36, 20
Correct Option: C

Suppose the numbers are 4p and 5p respectively
According to question
p × 4 × 5 = 120
⇒ p = 6
∴ Required numbers = 4p = 4 × 6 = 24 and = 5p = 5 × 6 = 30


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