Explanation

Let the present ages of son and father be x and (60 -x) years respectively.

Then, (60 - x) - 6 = 5(x - 6)

 54 - x = 5x - 30

 6x = 84

 x = 14.

 Son's age after 6 years = (x+ 6) = 20 years

Explanation

Let the ten's digit be x and unit's digit be y

Then, x + y = 15 and x - y = 3   or   y - x = 3

Solving x + y = 15   and   x - y = 3, we get: x = 9, y = 6

Solving x + y = 15   and   y - x = 3, we get: x = 6, y = 9

So, the number is either 96 or 69

Hence, the number cannot be determined.

Explanation

Explanation

Explanation

 3/-2=a/-6

-2a=-18

a=18/2

a=9

Explanation

63/10000 is the correct answer.

Explanation

Let C = x

Then:

• B = 2x (B is twice as old as C)
• A = 2x + 2 (A is 2 years older than B)

Total age = 27

(2x+2)+2x+x=27
5x+2=27
5x=25
$$x=5$$

$$Last\; updated\; 19-07-2026\; by\; NA$$

Explanation

Let the capacity of 1 bucket = x

Then the capacity of Tank= 25x

New capacity of bucket= 2/5x

Required number of buckets

= 25x/(2x/5)

= 25x*5/2x

= 125/2

= 62.5

Explanation

12 men took to 6 hours to complete the work.

It means there is 12 x 6= 72 units of work

Now 12men done work for one hour. So 12 x 1 =12 units of work completed.

Remaining work = 72-12= 60 units

Now the no of men=12+8= 20

So 60 units of work have to complete by 20 men

Therefore 60/20= 3 hours

Explanation

Let third number is x. Then first no.20%ofx=20x100 Second number=50%ofx=50x100 Percent of first no of second no,=20x10050x100×100=2×10020= 40%