A car travel first half distance between two places with a speed of 40 km per hour and the rest of half distance with the speed of 60 km per hour. The average speed of car is:

Let the total distance covered be "s"km.

Total time taken,

=(s/2)/40+(s/2)/60

=5s/240

Average speed,

=s/(5s/240)

=s*(240/5s)

=48 km/ hr

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The price of a mobile phone was first decreased by 10 percent and then increased by 20percent . The final price was what percent of the initial price?

Let price of cell is 100

decrease price by 10% =90

Increase price by 20% = 20% of 90

20 /100 Ã— 90 =18

So, 90 + 18 = 108

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In following alphabet series , one term missing as shown by question mark . Choose missing term from options.

ejo, tyd, ins, xch, ?

There is a gap of four letters between the first and second, the second and third letters of each term, and also between the last letter of a term and the first letter of the next term.

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In following alphabet series , one term missing as shown by question mark . Choose missing term from options.

Z, U, Q, ?, L

The first, second, third,... letters of the series are respectively moved one, two, three,... steps forward to obtain the successive terms..

A + B means A is the daughter of B ;

A x B means A is the son of B and

A - B means A is the wife of B.

If P x Q - S, which of the following is true?

Option (B)

P x Q - S means P is the son of Q who is the wife of S i.e. P is the son of S or S is the father of P.

The sum of Tony and Teddy age is thrice their mother age . Tony is two years younger than Teddy if the age of mother is 42 . Find the difference between mother and younger son.

Teddy=x elder son

Tony=x-2 younger sonGiven condition

3(Tony+Teddy)=Mother

3(x-2+x)=42

6x-6=42

6x=48

X=8

Tony = 6

Teddy=8

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Pointing to a photograph, a man said, I have no brother or sister but that man's father is my father's son.

Whose photograph was it?

Since the narrator has no brother, his father's son is he himself.

So, the man who is talking is the father of the man in the photograph or the man in the photograph is his son.

Hence the answer is( b).

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