Question

The LCM of two numbers is 1360 and their HCF is 20. If one of the numbers is 80, then the other number is

• A. 380
• B. 360
• C. 320
• D. 340

Hint:

Use formula: Product of numbers = LCM × HCF.

Answer 1

The Correct Option is D

Concept: Product of two numbers: \[ \text{Number}_1 \times \text{Number}_2 = \text{LCM} \times \text{HCF} \] Explanation: Let other number = $x$ \[ 80 \times x = 1360 \times 20 \] \[ 80x = 27200 \Rightarrow x = \frac{27200}{80} = 340 \]