Solution:

This is a tricky question. The velocity data may confuse many but if you look at the question closely, it is totally irrelevant.

You are being told that Wally sees a train after every five minutes. The velocity will not matter therefore and you need not look in that direction. All you want to know is that he sees a train after every 5 minutes and he completes the journey in an hour or 60 minutes.

All you need to do is divide 60 by 5 and you will get the answer which is 12.

Solution:

Suppose that the distance is x
The speed of Andy is A
And the speed of David is b

Now as per the question,
500/a = (x-500)/b
and (x+300)/a = (2x-300)/b
Solving the equations, we get x = 1200 yards

Solution:

1 + 3 + 5 + 7 +... (50*365) terms
Then, 1 + 3 + 5 + 7 + n terms = n*n

Thus the business will give her
(50*365) * (50*365) rupees = Rs.333062500

Solution:

Matthews's age: 10x + y

Daughter's age: 10y + x

Thus 10x + y = 10y + x

10x + y - 1 = 2 (10y + x - 1)

x = (19y - 1) / 8

For y = 3 (19y - 1) is completely divisible by 8

So x = 7

So Matthews' present age: 10*7 + 3 = 73

Daughter's age: 10*3+7 = 37

Solution:

5/2 cooks cook 5/2 chocolate puddings using 5/2 chocolates in 5/2 days

Thus,
1 cook make 1 chocolate pudding using 1 chocolate in 5/2 days
Thus,
1/10 cooks make 1 pudding using 1 chocolate in 25 days
Thus,
25/10 (or 5/2) cooks make 25 puddings using 25 chocolates in 25 days.

Solution:

Let the total number of candies = x
Number of candies with each person after division = x/3
After eating, total number of candies = x - 12
Thus, x - 12 = x/3
X = 18
Original number of candies = 18.

Solution:

1595

13
44 = 13 + 31
88 = 44 + 44
176 = 88 + 88
847 = 176 + 671
1595 = 847 + 748

Solution:

Suppose that Raina is on strike. He will hit a boundary and his score will become 98.

Now India require 3 runs to win in 2 balls.

He will now hit the ball and run for 3 runs out of which one will be deliberately run short. But the sides will be changed and Kohli will have the strike. Also Raina will complete his century.

Now the team will require 1 run to win on 1 ball and Kohli will be playing at 94. He will hit a 6 on the last ball and complete his century while also making the team win.

Solution:

All you have to do is draw a five pointed star. Now place the balls at each of the joints.

Solution:

Put five chocolates in the first bag, two in the second and three in the third.

Now insert the bag containing three chocolates in the bag containing 2 chocolates.

Now, you have one bag with five chocolates, another bag with five chocolates and the third bag with three chocolates which are each odd in number.