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3 years ago

The sum of Ali and Mel's age is 39. If Mel is 3 years younger than twice Ali's age, how old is Mel?

Mathematics

1 answer:

olga55 [171]3 years ago

4 0

Answer:

Age of Mel is 25 years.

Step-by-step explanation:

It is given that,the sum of Ali and Mel's age is 39. If Mel is 3 years younger than twice Ali's age.

Let 'x' be the Ali's age and 'y' be the Mel's age

To find the value of x and y

sum of Ali and Mel's age is 39

⇒ x + y = 39 ------(1)

Mel is 3 years younger than twice Ali's age

⇒ y = 2x - 3 -------(2)

⇒ 2x - y = 3 -----(3)

(1) + (3) ⇒

x + y = 39

2x - y = 3

----------------

3x = 42

x = 42/3 = 14

y = 2x - 3 = 14*2 - 3 = 25

Therefore the age of Ali = 14

Age of Mel = 25

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Step-by-step explanation:

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Also, total time is 5 hours, so we can write:

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Now we replace this equation with equation 2, so we get:

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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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