Question
Download Solution PDFTwo numbers X and Y are respectively 20% and 28% less than a third number Z. By what percentage is the number Y less than the number X ?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
Two numbers X and Y are respectively 20% and 28% less than a third number Z.
Formula Used:
Percentage less formula: (X - Y)/(X) × 100
Calculation:
Let the value of Z be 100
X is 20% less than Z
⇒ 100 × (100 - 20)/100
⇒ 80
Y is 28% less than Z
⇒ 100 × (100 - 28)/100
⇒ 72
According to the question,
⇒ (80 - 72)/(80) × 100
⇒ 10%
∴ The number Y is 10% less than the number X.
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