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how to equalize wages
(amt paid A - x)/hours A - (amt paid B + x)/hours B
Remainder if 1/y of x is removed from x
x(y - 1)/y will remain
Simple Interest =
Principal x Rate x Time (must match units)
Future Value incl. Compounded Interest
Principal ( 1 + rate/periods per year)periods x years
Linear Growth Formula
Final = growth constant(time periods) + initial size
Exponential Growth Formula
Final = (initial value)(growth factor)time periods
Value of any 2 digit number
10(tens digit) + ones digit
Sum of 3 consecutive integers
x + (x+1) + (x+2)
Sum of 3 consecutive even/odd integers
x + (x+2) + (x+4)
Sum of 3 consecutive multiples of y
x + (x+y) + (x+2y)
Attributes of a Dry Mixture Table
Units, Quantity, Total
Attributes of a Wet Mixture Table
Concentration %, Quantity, Total
Trick for mixtures w/ replacements
Start completing the matrix AFTER part of the mixture has been removed.
Original solution has quantity of Q - r
Replacement has quantity of r
Total length of a line with one object
X + Y + 1
(size between object and back) + (size between object and front) + object
Total length of a line with two objects
X + Y + Z + 2
sizes between each object or ends + 2 objects
