Word Problems Flashcards
1
Q
Work formula
A
1/W + 1/W = 1/C
W = time required to complete
C = time required for both working together.
(Convert from fraction to whole number)
RT = D
2
Q
Group problems
A
Grp 1 + grp 2 + neither - both = total
3
Q
Working together
A
Add rates = together
Subtract rates = undoing
4
Q
Distance problems
A
Towards
= add rates
Away = add rates
Catch up or same direction = subtract rates
5
Q
Scheduling problems
A
Use longest and shortest scenarios
6
Q
Compound interest
A
P * ( 1 + int rate / C ) ^ tc
7
Q
Simple interest
A
P ( 1 + rt)
8
Q
Fixed cost formula
A
FC / SP - VC
