What is the value of x such that the LCM (Least Common Multiple) of x and 75 is 525 and their HCF (Highest Common Factor) is 5?
Explanation
1. Formula Rule:
For any two positive numbers a and b, the product of the numbers is always equal to the product of their LCM and HCF:
Product of two numbers=LCM×HCF
2. Substitute the Given Values:
First number (a) = x
Second number (b) = 75
LCM=525
HCF=5
Plugging these values into the formula:
x×75=525×5
3. Solve for x:
x=75525×5
Divide 525 by 75:
75525=7
Now, multiply by 5:
x=7×5
x=35
Correct Answer
Option (d) 35
Explanation
1. Formula Rule:
For any two positive numbers a and b, the product of the numbers is always equal to the product of their LCM and HCF:
Product of two numbers=LCM×HCF
2. Substitute the Given Values:
First number (a) = x
Second number (b) = 75
LCM=525
HCF=5
Plugging these values into the formula:
x×75=525×5
3. Solve for x:
x=75525×5
Divide 525 by 75:
75525=7
Now, multiply by 5:
x=7×5
x=35
Correct Answer
Option (d) 35