Question

The sum of the ages of Ruby and his daughter is 49. 7 years ago, ruby was 6 times as old as her
daughter. Find their present ages.
please solve this my simultaneous linear equation
the correct answer are:-
Ruby-37 years
her daughter-12 years
please tell as soon as possible​

Answer 1

Answer:

hey your answer is as follows

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Step-by-step explanation:

let the present age of ruby be x years and that of his daughter be y years

so according to first condition

x+y=49 (1)

according to the second condition

x-7=6(y-7)

so x-7=6y-42

ie x-6y=-35 (2)

subtraction (2) from (1)

x+y=49

x-6y=-35

(-) (+) (+)

________

7y=84

thus y=12

so substitute value of y in any of two equations

we get x=37

thus present age of ruby is 37 years and that of his daughter is 12 years