CMAT Exam Numerical Ability Age Problem

There are 2 friends Peter and Paul. Peter's age was double of Paul's when peter was as old as Paul is now. Sum of the present ages of Peter and Paul is 35.What is the present age of Peter?
a. 7
b. 14
c. 20
d. 21

Read Solution (Total 2)

Let Peter's present age is = x
Paul's present age is = y
z year ago peter's age = x-z
z year ago paul's age = y-z

As per the above 2 conditions we get 3 equations
1. x+y = 35
2. x-z = y
3. x-z = 2(y-z)

solving the equations we have get only 3 values for x,y and z

X= 21, Y = 14, z=7

So peter's present age is 21..option d is correct.
7 years agoHelpfull: Yes(1) No(0)

No solution.... Provide a definite time scope... @ years ago, etc.
8 years agoHelpfull: Yes(0) No(1)

CMAT Other Question

A person travels from A to B at a speed of 4 and from B to A at a speed of 6. What is his average speed for the journey?
a. 4.8
b. 5
c. 5.2
d. None of the above In a tournament, knockout matches is played between 2 players and one player is declared as winner. All the winners from first round are played in second round. All the winners from second round are played in third round and so on. If 4 rounds are played to declare only one player as winner of the tournament, how many players are played in first round?
a. 4
b. 8
c. 16
d. 32