The answer is in the image
The solution is given in the image below
The wood before starting =12 feet
Left wood=6 feet
Wood used till now=12-6=6 feet
Picture frame built till now= 6/(3/4)
=8 pieces
Therefore, till now 8 pieces have been made.
tip=18% of 75.45
=18/100 * 75.45 = $13.581
Tip = $13.581
Let the father's age be x and son's be y
10 years before-
Father age=x-10
sons age=y-10
Given,
x-10=10(y-10)
x-10=10y-100
Given present age of father=40
therefore,
x=40
40-10=10y-100
10y-100=30
10y=130
y=130/10
y=13
Therefore present age of son=13years
There are 6 outcomes 1,2,3,4,5,6
Total outcomes = 6
Outcomes when rolling a number is 4 or less = 1,2,3,4
Total outcome when rolling a number is 4 or less=4
Probability = required outcome/total outcome
=4/6
=2/3
Therefore probability = 2/3
(1 or 7) ; number of possible outcome = 2
(a, e, i, o, or u) ; number of possible outcome = 5
So,
Number of possible outcomes = 2 x 5
Number of possible outcome =10
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