1.

Mina's father is thrice as old as Mona after 10 years he will be just twice his daughter . Find out present ages.

Answer»

ANSWER:

let MINA's present age be x

mina's father = 3x

equation:

3x + 10 = 2(x + 10)

3x + 10 = 2X + 20

3x = 2x + 20 - 10

3x = 2x + 10

3x - 2x = 10

x = 10

Mina's present age = 10

Mina 's father's present age = 3x = 3 × 10 = 30

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