Two bags each contain black and white marbles, as shown below. If Karl draws one marble from each bag, what is the probability t
hat they will both be black?
A.3/7
B.1/6
C.11/12
D.3
A.3/7
B.1/6
C.11/12
D.3
2 answers:
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Answer:
The Amount invested at 7% interest is $12,855
The Amount invested at 6% interest = $1,102
Step-by-step explanation:
Given as :
The Total money invested = $13,957
Let The money invested at 7% = = $A
And The money invested at 6% = = $13957 - $A
Let The interest earn at 7% =
And The interest earn at 6% =
-
= $833.73
Let The time period = 1 year
Now,<u> From Simple Interest method</u>
Simple Interest =
Or, =
Or, =
And
=
Or, =
∵ -
= $833.73
So, -
= $833.73
Or, 7 A - 6 (13,957 - A) = $833.73 × 100
Or, 7 A - $83,742 + 6 A = $83373
Or, 13 A = $83373 + $83742
Or, 13 A = $167,115
∴ A =
i.e A = $12,855
So, The Amount invested at 7% interest = A = $12,855
And The Amount invested at 6% interest = ($13,957 - A) = $13,957 - $12,855
I.e The Amount invested at 6% interest = $1,102
Hence,The Amount invested at 7% interest is $12,855
And The Amount invested at 6% interest = $1,102 . Answer
Divide the silver present in the bar by the total weight of the bar to find the percentage of silver in the bar.
Multiply this decimal by 100 for the percentage.
Rounded to the nearest tenth, 71.4% of the weight of the bar is silver.
Multiply this decimal by 100 for the percentage.
Rounded to the nearest tenth, 71.4% of the weight of the bar is silver.