Explanation

Given:

- Average age of 5 members = 21  

  → Total age of 5 members = 21 × 5 = 105

- When grandfather is included (6 members), average becomes 21 + 9 = 30  

  → Total age of 6 members = 30 × 6 = 180

Now, Grandfather's age = 180 – 105 = 75 years

Explanation

The husband and wife: 2

Six married sons: 6

Six daughters-in-law (wives of the sons): 6

30 grandchildren (6 sons x 5 children each): 30

Total family members: 2 + 6 + 6 + 30 = 44

The correct answer is 44.

Last verified on 22-02-2026

Explanation

Let's say B's income is 100%.

Then, A's income is 60% (since it's 40% less than B's).

To find out how much percent B's income is more than A's income, we need to find the difference between their incomes and divide it by A's income, then multiply by 100:

((B's income - A's income) / A's income) * 100

= ((100 - 60) / 60) * 100

= (40 / 60) * 100

= 66.66%

So, B's income is 66.66% more than A's income.

Last verified on 04-02-2026

Explanation

A+B = 60

B+C = 64

C+A = 68

Add 'em up:

2(A+B+C) = 192

A+B+C = 96

C = (A+B+C) - (A+B)

= 96 - 60

= 36

Last verified on 16-01-2026

Explanation

Explanation

The sum of the exterior angles of any polygon is always 360 degrees. 

As for the interior angles, the sum of all the interior angles in a polygon is equal to: (n-2) x 180

Explanation

The square root of 169 is 13, since 13 multiplied by 13 (13²) equals 169.

Explanation

B covers 28 meters in 7sec. So, B’s time over the course = (7/28)*1000 =250 sec.

Whereas A’s time over the course = 250 -7 = 243 sec.

i.e A’s time over the course is 4min, 3 sec

Explanation

Cost of 25 toys = 500

Cost of 01 toys = 500/ 25 = 20/ 1

1 toys = 20 

Cost f 75 toys = 75 x 20 = 1500

Explanation

15 × 1/4 = 15 ÷ 4 = 3.75