All categories

3 years ago

A woman’s age is three years more than twice her son’s age .the sum of their ages is 84. How old is the son ?

Mathematics

2 answers:

aliina [53]3 years ago

6 0

The women’s age plus the sons would be 27

EleoNora [17]3 years ago

3 0

Women age = 3 + 2 S (sons age) (three times more twice her sons age)
their age sum is 84
so women age + son age = 84
lets substitute the value of mothers age
3+2S+S=84
3S=84-3
3S=81
S=27
so sons age is 27

You might be interested in

Jose baked a cake that was partially eaten. The eaten cake is represented by the shaded

garik1379 [7]

The ratio of that question is 7:12

7 0

3 years ago

The ratio of money in Obi's wallet to Rudy's wallet one day was 5:2.

mamaluj [8]

Answer:

The amount that Obi initially had was £20

Step-by-step explanation:

Let

x ----> amount that Obi initially has

y ----> amount that Rudy has

we know that

$\frac{x}{y} =\frac{5}{2}$

$x=2.5y$ ----> equation A

$x-20=y-8$

$y=x-20+8$

$y=x-12$ ----> equation B

Solve the system by substitution

substitute equation A in equation B

$y=(2.5y)-12$

solve for y

$2.5y-y=12\\1.5y=12\\y=8$

Find the value of x

$x=2.5(8)=20$

therefore

The amount that Obi initially had was £20

4 0

4 years ago

It's said to say my question, but it's in the pic, so I don't know what to say. <br> But thanks

BARSIC [14]

Answer: A, or 0.2x

Step-by-step explanation:

To figure how expressions and percent's match up, replace the x with an easy number. For example, I use 4.

20% of 4 is 0.8, and 4 x 0.2 is also 0.8

Therefore, the expression to represent that percentage is A.

Also, the other answers were WAYYY off.

B, or x - 20 is flawed since x could be anything.

C, is also flawed in the same way.

And D makes -76.

A is the only sensible one and is proven to work.

Hope this helped!

-Nick

3 0

3 years ago

What is this pls help

Alex

-4.5 or -4.3 i’m not really sure i’m just estimating

7 0

2 years ago

3^x= 21875. What is the value of X?

horsena [70]

Answer:

If,

${3}^{x} = 2187 \\ = > x = 7 \\ = = = = = = =$

But 3^x ≠ 21875,if x is a whole number.

<h2>HOPE U UNDERSTOOD</h2><h3>THANKS★</h3><h3>Any doubts?COMMENT PLEASE</h3>

8 0

3 years ago

Read 2 more answers