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Doss [256]
3 years ago
12

At the beginning of the first day, Ann has 25 dollars. By the end of the first day, Ann has 2/3 of the money that she had at the

beginning of the first day. By the end of the second day, Ann has 4/7 of the money that she had at the end of the first day. How much money does Ann have at the end of the second day? Express your answer (in dollars) as a fraction.
Mathematics
1 answer:
ira [324]3 years ago
8 0

Answer:

Ann have at the end of the second day  \$9\frac{11}{21}.

Step-by-step explanation:

Given:

At the beginning of the first day, Ann has 25 dollars.

<u>By the end of the first day, Ann has 2/3 of the money that she had at the beginning of the first day. </u>

<u>By the end of the second day, Ann has 4/7 of the money that she had at the end of the first day.</u>

Now, to find the money Ann have at the end of the second day.

Ann has at the beginning of the first day = $25.

At the end of the first day Ann had:

\frac{2}{3} \ of\ 25

=\frac{2}{3} \times 25

=\$\frac{50}{3} .

<u><em>So, at the end of the first day Ann had</em></u><u> </u> =\$\frac{50}{3} .

Now, to get the money Ann have at the end of the second day:

\frac{4}{7} \ of\ \frac{50}{3}

=\frac{4}{7} \times \frac{50}{3}

=\frac{200}{21}

=\$9\frac{11}{21} .

Therefore, Ann have at the end of the second day \$9\frac{11}{21}.

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Joseph wants to buy a new tennis racquet which cost $200 from the factory. The sports shop marks up the price by 60%. Joseph bou
andriy [413]
Use multipliers:
The normal price the shop would sell the racquet for is:
1.6 * 200 = 320
'1.6' is the multiplier that I got using the percentage. Multiplying a value by 1.6 is the same as increasing the value by 60%. If you multiplied it by 0.1 (which is the same as dividing by 10), you would get just 10% of the value.
Back to the question, now we can use the multiplier 0.75 because we are are reducing the price by 25% (0.25 as a decimal), so:
320 * 0.75 = 240
And now we want just the profit so we take off how much it cost the shop to buy ($200): 240 - 200 = 40
5 0
3 years ago
What type of sample produces valid results?
Finger [1]
I would say D the other answers seem wrong
3 0
3 years ago
During a checkers game, there are 16 pieces left. The ratio of black to red is 3 : 5. How many black pieces are on the board? Ex
kotegsom [21]

Answer:

6 black pieces

10 red pieces

Step-by-step explanation:

The way to interpret ratios is like so:

Adding up both parts of the ratio gives 8, i.e. 3 + 5

So for every 8 pieces, 3 are black and 5 are red;

There are 16 pieces, which is 2 × 8;

So, there are (2 × 3) black pieces and (2 × 5) red pieces, i.e. 6 black and 10 red

So, to solve:

Add all parts of the ratio (3 + 5);

Divide the number of pieces (16) by this sum of ratio parts (8);

Multiply the value from the division (2) by each part of the ratio

Tip:

It is important to take note of the order in the ratio, so the ratio of black to red means the number that comes first in the ratio represents parts black and the one that comes second represents parts red;

If the wording was the ratio of red to black, the number that comes first would represent parts red and the second would represent parts black

3 0
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A shopper bought shoes 45.00. the sales tax is 65%. How much did the shopper pay in all
Yuri [45]
45*65= 29.45
29>45= 74.25
3 0
3 years ago
What is the value of x?
Aleksandr [31]

Answer:

x = 20

Step-by-step explanation:

these are vertical angles and vertical angles are congruent

3x+50 = 6x-10

3x = 6x - 60

-3x = -60

x = 20

6 0
3 years ago
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