Mathematics for IGCSE & O level - Number (Section 1 - No. 31)
The HCF of two numbers is 5. The LCM of the same two numbers is 60. If one of the numbers is 15, what is the other number?
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Forklaring
Using the formula: Number 1 * Number 2 = HCF * LCM. Let the unknown number be 'x'. 15 * x = 5 * 60; x = (5 * 60) / 15; x = 20.