Answer :
100% represents the current size. To work out the new size, you add the percentage increase - this gives 107.5%
"per cent" means "per hundred" and is a ratio.
To work out the new value for p you multiply it by 107%.
To find a percentage, you multiply the the "percent" ratio and then divide by 100.
So 100% of p is: p * 100 / 100 (you can see here that 100/100 = 1, so the value is unchanged).
107% of p will be: p * 107 / 100
"per cent" means "per hundred" and is a ratio.
To work out the new value for p you multiply it by 107%.
To find a percentage, you multiply the the "percent" ratio and then divide by 100.
So 100% of p is: p * 100 / 100 (you can see here that 100/100 = 1, so the value is unchanged).
107% of p will be: p * 107 / 100