3 years ago

Please I need help ASAP. Can someone help me?

Mathematics

1 answer:

Alenkasestr [34]3 years ago

5 0

Answer: The second bubble thing is correct you have picked the wrong one.

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On a boat ride tour there are half as many children as there are adults. There are 30 people on the tour. How many children are

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Total number of people on boat=30
Half as many children as adults means:
Number of children = 1/2 ( Adults)
Let number of adults= A
Then equation is:
$A+ \frac{1}{2}A = 30 \\
Multiply \ both \ sides \ by \ 2. \\
2A+A=60 \\
3A=60 \\
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3 years ago

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Musya8 [376]

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3 years ago

An actor invests some money at 7%, and $48000 and more than twotimes the amount of 9%. The total annual interest earned from the

forsale [732]

Answer:

At 7% $54,000

At 9% $156,000

Step-by-step explanation:

Let x be the amount invested at 7%, Then 2x + 48000 will be the amount invested at 9%

We know that:

7% = 0.07 & 9% = 0.09

So we can write the interest equation as follows:

0.07x + 0.09 (2x + 48000) = 17820

0.07x + 0.18x + 4320 = 17820

0.25x + 4320 = 17820

Subtracting 4320 from both sides of the equation we get:

0.25x = 17820 - 4320

0.25x = 13500

Dividing both sides of the equation by 0.25 we get:

x = 13500 / 0.25

x = $54,000 invested at 7%

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= $156,000 invested at 9%

Hence the amount invested at 7% is $54,000.

& the amount invested at 9% is $156,000.

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