Explanation

Let Shafqat's age = x

Barkat's age = 2x

Akhtar's age = 2x + 2

Sum: x + 2x + 2x + 2 = 27

5x + 2 = 27

5x = 25

x = 5

Explanation

Let's apply inverse proportion:

12 employees × 20 days = x employees × 10 days

x = 12 × 20/10 = 24

Explanation

1 hour's work of A = 2.5% (meaning A completes 2.5% of the work in 1 hour)

1 hour's work of B = 1.66% (meaning B completes 1.66% of the work in 1 hour)

Combined work rate of A and B in 1 hour = 2.5% + 1.66% = 4.16%

Time to complete the work = 100%/4.16% = 24 hours (since they work 8 hours a day, this is equivalent to 3 days)

So, A and B together can complete the work in 3 days, working 8 hours a day.

Explanation

Let daughter's age = x

Mother's age = 4x

Two years ago:

Daughter's age = x - 2

Mother's age = 4x - 2

4x - 2 = 5(x - 2)

4x - 2 = 5x - 10

x = 8

Explanation

Let's assume the son's age is x.

Man's age = 3x

Ten years ago:

Son's age = x - 10

Man's age = 3x - 10

Given:

3x - 10 = 5(x - 10)

3x - 10 = 5x - 50

40 = 2x

x = 20