Questions of the form "find 25% of 60".
In order to answer this you multiply the number, 60, by the percentage over 100, 25100
60×25100=15
Remember: Give you answer to 2 decimal places.
Questions of the form "if a mixed bag of 20 sweets contains 10 mints and 10 chocolates. What percentage of the contents is chocolate"
To calculate the percentage of chocolate sweets in the bag you must divide the number of chocolates by the total number of sweets and then multiply by 100.
$\dfrac{\var{chocolate}}{\var{sweets}}\times 100 = \simplify{100*{chocolate}/{sweets}}.
Remember: Give you answer to 2 decimal places.
Questions of the form "convert 3063 into a percentage"
This question is very similar to part b). We already have the number in fractional form if we covert this into a decimal and multiply by 100% we obtain the percentage
3063=deciamal×100%=47.619047619%
Remember: Give you answer to 2 decimal places.
Questions of the form "convert 25% into a fraction"
To do this you simply divide by 100.
25%=25100=14
Questions of the form "Last year the average mark in an exam was 49. They have now increased by 8 percent. What is the current average mark?"
We start by finding 8 % of 49.
49×8100=3.92
We then add this onto last years average marks to find this years
49+3.92=52.92