Person a can paint the neighbor's house 22 times as fast as person
1 answer:
Let 1/x=the time it takes for person b to paint
let 1/22x the time that it takes for person a to paint
lastly we have the following since we know that when they work together that is how long it takes
to solve we first multiply both sides by 1694x
we then combine like terms
lastly we divide both sides by 22
let 1/22x the time that it takes for person a to paint
lastly we have the following since we know that when they work together that is how long it takes
to solve we first multiply both sides by 1694x
we then combine like terms
lastly we divide both sides by 22
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Answer:
0.7569, 0.5729,0.4371
Step-by-step explanation:
Given that the books are of only two types either non dash fiction or fiction.
Also probability of selecting a fiction = 0.87 = p
X - no of books fiction selected is binomial with p = 0.87 and n =2
(since each trial is independent of the other and there are only two trials)
a) the probability that both books are fiction=
b) Here n =4 with same p.
c) Prob atleast one is non dash fiction =
This is not unusual since 0.4371 probability is not nearer to 0 it is almost half.