Profit and Loss
What is the formula to calculate the percentage profit?
Percentage Profit = (SP - CP) / CP × 100%
What is the expanded form of the expression:
4 (6x - 4)
A) 24x + 16
B) -24x - 16
C) 24x - 16
Ans: C
What are the common factors of 6 and 12?
BONUS: Are there any that are shared between 6 and 12?
Common Factors:
6: 1,6 2,3
12: 1,12 2,6 3,4
Common factors are shared between 6 and 12 are: 1, 2, 3, 6
What does BOMDAS stand for?
BONUS: Why is it important to use in expanding brackets.
B: Brackets
O: Order
M: Multiplication
D: Division
A: Addition
S: Subtraction
True or False:
Profit occurs when the Selling Price is greater than the Cost Price
True.
The shop makes money selling the item since the Selling Price is greater than the Cost Price.
SP > CP
Expand:
4 (3 + 5x)
Ans:
12 + 20x
Which of these is the correct factored form of
12x + 18:
A) 4 (3x + 4)
B) 6 (2x + 3)
C) 4 (4x + 3)
D) Cannot be Factorised
Ans: B
*Look for common factors
12: 1,12 2,6 3,4 18: 1,18, 2,9 3,6
*Highest Common number is 6
So move the 6 out the front and factorise.
What is the colour of the Wickham sporting house?
Blue
Marsden SHS Tuckshop sells meat-pies to students for $4.50 each.
The Tuckshop bought the pies for $2.50 each.
What is the percentage profit that the Tuckshop makes selling the meat pies?
A: 80%
Percentage Profit = (SP - CP) / CP * 100%
Percentage Profit = (4.50 - 2.50) / 2.50 * 100%
Percentage Profit = 2.00 / 2.50 * 100%
Percentage Profit = 80%
Expand:
-7x (2x - 3)
Ans:
-14 x2 + 21x
Perry wanted to factorise an expression given to him by his classmate. The expanded form of the qeustion was given by: -18x + 12
Perry said the factored form of the expression was: 9 (2x + 3). Perry is wrong.
For full marks, tell me at least two things Perry did which were wrong.
Bonus: what should the correct factored form of the expression be?
The expression was -18x + 12.
The wrong answer is 9 (2x + 3).
* Missing negative sign
* Highest common factor is 6, not 9
* 9 x 3 = 27 not 12.
BONUS: 6 (-3x + 2)
How many hearts does an octopus have?
The octopus has three hearts - two that drive blood through the gills and one that circulates the bloodstream.