5. In a plaza, the monthly rental of a shop of A m² on the nth floor is $R. It is given that R varies directly
as A and inversely as n. Charles and Diana are going to rent shop C on the 4th floor and shop D on the
3rd floor of the plaza respectively. The monthly rentals of shops C and D are in the ratio of 3:5.

(a) Find the ratio of the areas of shops C and D.

(b) Charles finally decides to rent shop E on the 2nd floor instead. The area of shop E is 22% smaller
than that of shop C.

(i) Find the percentage change in the monthly rental paid by Charles.

(ii) Charles claims that the monthly rental paid by him now is still less than that paid by Diana.
Do you agree? Explain your answer.

The weight of 46 new patients of a clinic from the year 2018 are recorded and listed below. construct a frequency distribution, using 7 classes. then, draw a histogram, a frequency polygon, and an ogive for the data, using the relative information from the frequency table for each of the graphs. describe the shape of the histogram. data set: 130 192 145 97 100 122 210 132 107 95 210 128 193 208 118 196 130 178 187 240 90 126 98 194 115 212 110 225 187 133 220 218 110 104 201 120 183 124 261 270 108 160 203 210 191 180 1) complete the frequency distribution table below (add as many rows as needed): - class limits - class boundaries - midpoint - frequency - cumulative frequency 2) histogram 3) frequency polygon 4) ogive