Mother and daughter 2

The mother is 40 years older than her daughter. How old is the mother if her age is eight-thirds age of the daughter?

Correct answer:

m =  64

Step-by-step explanation:

m=40+d m=8/3d m=64

m = 40 + d; m= 8/3d

m = 40 + d
m= 8/3·d

d-m = -40
8d-3m = 0

Pivot: Row 1 ↔ Row 2
8d-3m = 0
d-m = -40

Row 2 - 1/8 · Row 1 → Row 2
8d-3m = 0
-0.63m = -40


m = -40/-0.625 = 64
d = 0+3m/8 = 0+3 · 64/8 = 24

d = 24
m = 64

Our linear equations calculator calculates it.



Did you find an error or inaccuracy? Feel free to write us. Thank you!







Tips for related online calculators
Do you have a system of equations and looking for calculator system of linear equations?
Do you want to convert time units like minutes to seconds?

You need to know the following knowledge to solve this word math problem:

Related math problems and questions: