Question

Lesedi is X years old

1. How was Lesedi 5years ago?
2.How old will Lesedi be in 10 years from now if her age in 10 years time will be four times her age 5 years ago, how old is she now?

Answer 1

1) (x - 5) years old

2) 20 years old

Step-by-step explanation:

==== (1) =====

Current Age:

• x years old

5 years Ago:

• (x - 5) years old

===== (2) =======

In 10 years time:

• 4(x - 5)

• (4x - 20) ... more simplified.

To solve x,

• 4x -20 = x + 10

[Here the (x+10) came from present age + 10 years from now]

• 4x - x = 10 + 20

• 3x = 30

• x = 10 years ... this is present age.

10 years from present age:

• x + 10 or 4(x-5)

• 10 + 10 or 4(10-5)

• 20 years old or 20 years old