Answer:
5
Step-by-step explanation:
Terrible wording on the question as the "father" is 15 the "son" is 10 and the sister is 0 or just born
J = john
S = son
X = sister
J = 2s
S = 5 + X
3(x+5) = J + 5
J = 2(5+x) = 2x + 10
3x+15 = 2x +10 + 5
x = 0
The correctly expressed answer is 1.108 × 10⁻² ounces.
<u><em>Explanation</em></u>
The conversion factors are 10³ grams per kilogram, 1 pound per 453.6 grams and 16 ounces per pound.
So, 0.0003140 kilograms = 
Now, 1 pound = 453.6 grams
⇒ 1 gram = 
So, 0.3140 grams = 
Now,
So, 0.0003140 kilograms = 1.108 × 10⁻² ounces.
14.29 * .0725 = 1.04
1.04 * 3 = 3.12
From The picture 2 barrels = 73 gallons
Divide by 2 for gallons per barrel:
73/2 = 36.5 gallons per barrel
Multiply gallons per barrel barrels:
36.5 x 0.045 = 1.6425 gallons.
Rounded to 2 decimals = 1.64