(Total for Question 13 is 4 marks)
14.
Ella sells jars of jam, jars of honey and jars of chutney from her market stall.
On Thursday, the total number of jars she sold was 320
\( 55 \% \) of the jars were jars of jam.
The ratio of the number of jars of honey to the number of jars of chutney that Ella sold on Thursday was 5:3
(a) Calculate the number of jars of chutney that Ella sold on Thursday.
On Friday, Ella sold 99 jars of strawberry jam.
This was \( \frac{9}{20} \) of the total number of jars of jam that she sold on Friday.
The number of jars of jam that Ella sold increased from Thursday to Friday.
Given that this increase \( =\frac{1}{n} \times \) the number of jars of jam that Ella sold on Thursday,
(b) find the value of \( n \).
Ella increases the price of a jar of jam from 3.20 euros to 3.50 euros.
(c) Calculate the percentage increase in the price of a jar of jam.
Ella increases the price of a jar of honey by \( 6.25 \% \)
The price of a jar of honey after the price increase is 5.10 euros.
(d) Calculate the price of a jar of honey before the price increase.