A woman is 10 times as old as her daughter. In 8 years she will be 4 times as old as her daughter. How old is the mother now?

Mathematics

2 answers:

mars1129 [50]2 years ago

4 0

Answer:

80 years

Step-by-step explanation:

Let daughter's age be x years.

Therefore, women's age = 10x years

8 years after:

Daughter's age = (x + 8) years

Women's age = 4(x + 8) years

$4(x + 8) = (x + 8) \\ 4x + 32 = x + 8 \\ 4x - x8 - 32 \\ 3x = - 24 \\ x = \frac{ - 24}{3} \\ x = - 8 \\ \because \: age \: of \: a \: person \: can \: not \: be \: negative \\ \therefore \: x = 8 \\ \therefore \: 10x = 10 \times 8 \\ \huge \red{ \boxed{\therefore \: 10x = 80 \: years}}$

jeka57 [31]2 years ago

3 0

Answer:

Mom is 40 and her daughter is 4; in eight years, mom will be 48 and her daughter will be 12.

Step-by-step explanation:

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Using the weighed mean formula, it is found that Mara's average for the course was of 68.6.

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The weighed mean is given by the sum of all elements in a data-set multiplied by it's weight, divided by the sum of the weights.

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More can be learned about the weighed mean formula at brainly.com/question/24398353

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