Mathematics help needed

[flash2wave2]

I need you to look at the Mathematics extended paper 43 for 2010, for CIE IGCSE.
Question 1(C).

I keep on getting the answer 21.5%.

Using the equation 30 x r% x 5/100 = 32.25 i got this answer.
The Mark scheme insists that 32.25 is 2.25, anyone got any idea about this?
Thank you in advance

 

[SalmanPakRocks]

I need you to look at the Mathematics extended paper 43 for 2010, for CIE IGCSE.
Question 1(C).

I keep on getting the answer 21.5%.

Using the equation 30 x r% x 5/100 = 32.25 i got this answer.
The Mark scheme insists that 32.25 is 2.25, anyone got any idea about this?
Thank you in advance

May/june or November ??

 

[flash2wave2]

srry, it's May/June

 

[SalmanPakRocks]

the answer is 1.5%
Listen Amount after 5 years = 32.25%
so the interest will be A-P=2.25

so we will put the formula S.I=prt/100
S.I =2.25*100=30*r*5
S.I=225/30*5
S.I=1.5%