A. find 72% of a quantity if 11% of the quantity is 550 B. Express 9 hours as a percentage of one day.

C. In a school there are 800 students, 63% have black hair, 19% have brown hair and the remainder have fair hair Find:
A. the percentage of fair haired students

B. how many students have brown hair.

D. I bought a bicycle for $640 and sold it for a profit of 20%. Find the selling price of the bicyle

E. A greengrocer bought 200 kg of oranges for $180 and sold them for $1.14 per kilogram.
a. his profit
b. his percentage profit on the cost price.

F. Find the simple interest when €4500 is borowed for 3 years at 14% p. a.

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Describe how the presence of possible outliers might be identified on the following. (a) histograms gap between the first bar and the rest of bars or between the last bar and the rest of bars large group of bars to the left or right of a gap higher center bar than surrounding bars gap around the center of the histogram higher far left or right bar than surrounding bars (b) dotplots large gap around the center of the data large gap between data on the far left side or the far right side and the rest of the data large groups of data to the left or right of a gap large group of data in the center of the dotplot large group of data on the left or right of the dotplot (c) stem-and-leaf displays several empty stems in the center of the stem-and-leaf display large group of data in stems on one of the far sides of the stem-and-leaf display large group of data near a gap several empty stems after stem including the lowest values or before stem including the highest values large group of data in the center stems (d) box-and-whisker plots data within the fences placed at q1 â’ 1.5(iqr) and at q3 + 1.5(iqr) data beyond the fences placed at q1 â’ 2(iqr) and at q3 + 2(iqr) data within the fences placed at q1 â’ 2(iqr) and at q3 + 2(iqr) data beyond the fences placed at q1 â’ 1.5(iqr) and at q3 + 1.5(iqr) data beyond the fences placed at q1 â’ 1(iqr) and at q3 + 1(iqr)

If bill bought a home for $210,000 and he sold it a year later for $120,000 his percentage of loss is

Sate why the measure of angle d is 120 degrees