A shoe store is having an After Holiday sale and everything must go! If all the shoes are marked 60% off, how much do you pay for 2 pairs of shoes that cost $45 and $75?

$48

Step-by-step explanation:

Find 1% of each pair of shoe first.

1 pair of shoe which cost $45:

100% = 45

1% = 45 ÷ 100 = 0.45

Other pair of shoe which cost $75:

100% = 75

1% = 75 ÷ 100 = 0.75

Now find 60% of each pair, the sale percentage.

1 pair of shoe which cost $45:

60% = 0.45 x 60 = $27

Other pair of shoe which cost $75:

60% = 0.75 x 60 = $45

Now, do full price - 60% of it.

$45 - $27 = $18

$75 - $45 = $30

Now add them up.

$18 + $30 = $48

(Final answer)

85.560%

step-by-step explanation:

conditional probability is defined as:

p(a|b) = p(a∩b) / p(b)

in other words, the probability that a occurs, given that b has occurred = the probability that both a and b occur / the probability that b occurs.

in this example:

p(turns 64 | turns 44) = p(turns 64 & turns 44) / p(turns 44).

if someone turns 64, they must have already turned 44, so:

p(turns 64 | turns 44) = p(turns 64) / p(turns 44)

on page 42, we see that of the original 100,000, 94944 turn 44, and 81234 turn 64.   therefore:

p(turns 64 | turns 44) = 81234 / 94944

p(turns 64 | turns 44) = 0.85560