3 years ago

12q - 6 + 7 - 3q + q

Mathematics

1 answer:

s344n2d4d5 [400]3 years ago

3 0

Answer:

10q - 1

Step-by-step explanation:

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John’s father is 5 times older than John and John is twice as old as his sister Alice. In two years time, the sum of their ages

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John’s age is 8 years

Step-by-step explanation:

Let

x -----> John’s father's age

y -----> John’s age

z -----> John’s sister's age

we know that

$x=5y$ -----> equation A

$y=2z$

$z=y/2$ -----> equation B

$(x+2)+(y+2)+(z+2)=58$

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Find the value of z

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therefore

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John’s age is 8 years

John’s sister's age is 4 years

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