Question

hey please help!!! I will do anything and everything if u help me!!!! please I beg you!!!

If your marks in a test increased from 20 to 30, then find the percentage of increase in your marks.

Thanks

Answer 1

percentage of 20 marks out of 100 is 20% and similarly 30 is 30% . so the persentage increase is 10% .

Answer 2

increase percentage =
$\frac{30 - 20}{20} \times 100 \\ \frac{10}{20} \times 100 \\ \frac{10}{2} \times 10 \\ 10 \times 5 \\ = 50\%$