The HCF and the LCM of two numbers are 35 and 840, respectively. If the ratio of the two numbers is 3 : 8, then the smaller of the two numbers is:
Answer & explanation
Correct answer: option 3
HCF × LCM = Product of the numbers
35 × 840 = 3x × 8x
x2 = 1225
x = 35
so the smaller number = 35 × 3 = 105