Explanation

Day 1 = 5 GB

Day 2 = 10 GB 

Day 3 = 15 GB

Day 4 = 20 GB

The data increases by 5 GB every day.

This is an arithmetic series.

First term a = 5

Common difference d = 5

Number of days n = 15

Formula for sum = n/2 _ [2_a + (n-1)_d]

Put values:

Sum = 15/2 _ [2_5 + (15-1)_5]

Sum = 15/2 _ [10 + 70]

Sum = 15/2 _ 80

Sum = 15 * 40

Sum = 600

Total data in 15 days = 600 GB

Last verified on 12-07-2026

Explanation

U is the son of W → W is U's parent.

T is the son of U → T is the child of W's son.

Therefore, T is W's grandson.

The information about V and X does not affect the relationship between T and W.

Last verified on 12-07-2026

Explanation

Let daughter's present age = x  

Then mother's present age = 4x

After 5 years:  

Daughter's age = x + 5  

Mother's age = 4x + 5 

Sum after 5 years = 60  

So, (x + 5) + (4x + 5) = 60  

x + 5 + 4x + 5 = 60  

5x + 10 = 60  

5x = 60 - 10  

5x = 50  

x = 10  

Daughter's present age = 10 years

Last verified on 11-07-2026

Explanation

Let the daughter's present age = x.

Father's present age = 3x

After 12 years:

Father's age = 3x + 12

Daughter's age = x + 12

According to the question:

3x + 12 = 2(x + 12)

3x + 12 = 2x + 24

x = 12

So, the daughter's present age is 12 years.

Last verified on 11-07-2026

Explanation

25*25 = 625

Last verified on 09-07-2026