General Word Problems Flashcards
more than translates to
+
as many translates to
x
factor translates to
x
years older translates to
+
years younger translates to
-
What is the process of solving age problems?
express the variables in present tense, then express them in past or future, and then use question to form equations using variables and solve them
What you should remember about length problems?
small length + long length = total length?
Price per item = ?
total cost / number of items
profit formula is?
revenue - (fixed + variable expenses)
What are variable expenses?
those expenses vary according to the revenue.
Fractional parts rule?
fractional parts of a whole number must sum to the whole number
Simple Interest =
PTR/ 100
Compound Interest =
P(1 + R/N)^NT
What is N in compound interest formula?
Number of compounding periods
Linear growth formula?
f = kt + i; t = no of time periods k = constant amount
exponential growth formula?
f = I (k)^t where x = no of time periods and k = constant factor
What must be true about amount of growth?
In order to determine the amount of growth, we must know the growth driver
How do you express Exponential decay constant factor?
1/factor
two digit equation
10t + u
consecutive even or odd integers sequence = ?
x, x+2, x+4, ….
consecutive multiples of 5
x, x+5, x+10, …..
How do you solve dry mixture problems?
- find the components 2. find the units 3. find the qty. Put them in matrix and use them to solve
How do you solve wet mixture problems?
- find the components 2. find the concentration 3. find the qty. put them in matrix and use them to solve
as few as translates to
> =
as many as translates to
> =
atmost translates to
<=
at least translates to
> =
People waiting in line formula
m-n+1. m = mth person from beginning, n = nth person from last
