D=event that chip selected is defective
d=event that chip selected is NOT defective
Four possible scenarios for the first two selections:
P(DDD)=15/100*14/99*13/98=13/4620
P(DdD)=15/100*85/99*14/98=17/924
P(dDD)=85/100*15/99*14/99=17/924
P(ddD)=85/100*84/99*15/98=17/154
Probability of third selection being defective is the sum of all cases,
P(XXD)=P(DDD)+P(DdD)+P(dDD)+P(ddD)
=3/20
10 is the value coz you add 10 each time you add
<span>Answer is about 12.85.</span>
If you want to easily find the solution you can use your calculator.
Just divide 77 by 110 and see the result.
77/110 = 0.7 = 7/10 = 70/100 = 70%
100% - 70% = 30%
Explanation
110*x=77
x=77/110, but the answer is not a percent
So 77/110 = ?/100 => ?=77*100/110=70 => 70%
But since 70% does not represent a percentage decreasement, we need to subtract it from the 100%
100% - 70% = 30%
3. You purchase a car using a $20,000 loan with a 5% simple interest rate.
(a) How much interest do you pay on your loan if you pay off the loan in 4 years? Show your work.
(b) How much interest do you pay on your loan if you pay off the loan in 2 years? Show your work.
(c) How much interest do you save by paying the loan off in 2 years instead of 4? Show your work. Answer:
