Dad is twice as old as Jon. Grand-Pa is seven years older than three times Jon's age. The sum of their age is 145 years. How old is Grand-Pa?
pls help i will give the brinlist:0

Answers

Answer 1

Step-by-step explanation:

let jon age be x

dad age is 2 of x i.e 2x

grandpa age is 7 + 3(x)

The sum of jon dad and grandpa age is 145 i.e

x + 2x + (7+3x) = 145

3x +. 7 + 3x = 145

6x = 145- 7

6x = 138

divide both sides by 6

x = 23

jon age is 23

while

grandpa age is

7 + 3(x)

7 + 3(23)

7 + 69

76.


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Step-by-step explanation:

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Step-by-step explanation:

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Step-by-step explanation:

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Well.. the equation for the interior angles of a polygon is 180(n-2). So it could possibly be 180.


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Step-by-step explanation:

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Answers

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Step-by-step explanation:

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Answers

Answer:

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Step-by-step explanation:

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What is Percentage?

Percentage is defined as the parts of a number in a whole of 100. This is denoted by the symbol '%'.

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Any number can be expressed as a percentage of another number by dividing the number with the whole of other number and then multiplying with 100.

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Step-by-step explanation:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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Have a nice day


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Answers

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Answers

Answer:

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Step-by-step explanation:

Resolvemos esta pregunta usando la fórmula:

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Answers

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Light is about 299,999,700 mps (meters per second) faster than sound in dry air.

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Step-by-step explanation:

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Answers

Answer:

Age of Mark [tex]=10[/tex] years

Age of Mark's dad [tex]=30[/tex] years

Age of Mark's sister [tex]=8[/tex] years

Step-by-step explanation:

Let age of Mark be [tex]x[/tex] years.

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Age of her Mark's dad [tex]=3x[/tex]

Mark's sister is 2 years younger than Mark

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