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Fiesta28 [93]
3 years ago
11

the father is 30 years older than his son.after 10 years from now ,the sum of their ages is 64.what are their ages right now

Mathematics
2 answers:
prohojiy [21]3 years ago
7 0
24 the answer is 24 

(just because i dont have enough characters soooooo LOLOLOLOLOL)
aniked [119]3 years ago
4 0
If sons age is x years then fathers = x + 30

after 10 years ,   we have the equation

x + 10 + x + 30 + 10 = 64
2x = 64 - 50 = 14
x = 7

So right now the son is 7 years old and the father is 37.
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Jessica is selling books during the summer to earn money for college. She
labwork [276]

Answer:

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Step-by-step explanation:

I am confused but thats my guess

4 0
2 years ago
An actor invests some money at 9​% simple​ interest, and ​$24,000 more than three times the amount at 10​% simple interest. The
Andrew [12]

Answer:

The amount invested at 9% is $93000

The amount invested at 10% is $303000

Step-by-step explanation:

Let the amount invested at 9% interest rate be x

And the amount invested at 10% rate be y

Simple Interest from x in a year = 0.09x

Simple Interest from y in a year = 0.1y

But y = 24000 + 3x

And the sun of the interests, 0.09x + 0.1y = 38670

Now we have a simultaneous eqn

y = 24000 + 3x (eqn 1)

0.09x + 0.1y = 38670 (eqn)

Substitute y into eqn 2

0.09x + 0.1(24000 + 3x) = 38670

0.09x + 2400 + 0.3x = 38670

0.39x = 38670 - 2400

x = 36270/0.39 = $93000

y = 24000 + 3x = 24000 + 3 × 93000 = $303000

8 0
3 years ago
Solve the inequality:-3x-4/7 >5
Aliun [14]

x < -  \frac{13}{7}

add \frac{4}{7} to both sides

- 3x > \frac{4}{7} + \frac{35}{7}

- 3x > \frac{39}{7} ( divide both sides by - 3 )

note that when we divide/ multiply by a negative quantity we must reverse the inequality symbol

x < - \frac{13}{7}



6 0
3 years ago
Krutika was thinking of a number. Krutika adds 4 to it, then doubles it and gets an answer of 83.9. What was the original number
mr Goodwill [35]

Answer:37.95

Step-by-step explanation:

8 0
3 years ago
Convert 0.533333... to a fraction.<br> (only the 3 is repeating)<br><br> Please show the work!!
amm1812
<span>Let x = 0.5333333333 ...

So 100x = 53.3333333333 ...
and 10x = 5.3333333333 ...
---------------------------------
90x = 53 – 5 = 48.

So x = 48/90 = 8/15 after reduction to lowest terms (by factor of 6)
0.3333... = ⅓. and that 0.5 = ½.

So 0.533333... = 0.5 + 0.0333333...0.5 + 0.3333.../10 = 1/2 + (1/3)/10 = 1/2 + 1/30 = 16/30 = 8/15</span>
6 0
3 years ago
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