Two numbers are respectively 45% and 20% more than a third number. By what percentage (approximately) is the first number more than the second?
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → 20.8%
Take the third number as 100. “More than the second” means the difference is measured on the second number.
First number \(=145\), second number \(=120\)
Difference \(=145-120=25\)
Percentage \(\displaystyle =\frac{25}{120}\times100=20.83\%\), about 20.8%
The first number is about 20.8% more than the second.