Peter and Paul are two friends. The sum of their ages is 35
years. Peter is twice as old as Paul was when Peter was as
old as Paul is now. What is the present age of Peter?
Answers were Sorted based on User's Feedback
Answer / sumit jha
when ws peter as as paul is nw?? (x-y) years ago!!
so those years ago paul's age= y-(x-y) yrs
now qstn says peter is twice the age as paul ws then.
so x/2 = y-(x-y)
or x/2=2y-x
or x= 4y - 2x
or 3x = 4y
or y = 3/4x
rplacing d value of y in d equation x+y=35 we get answer as
-----
x=20
-----
y =15.
------
thus (x-y)=5 yrs ago y was 10 and x is twice that=20.
but x+y=35
| Is This Answer Correct ? | 32 Yes | 6 No |
Answer / paul
The answer is 21 years old (age of Peter).
Equation:
let x = present age of Peter
y = present age of Paul
When Peter has the same age as Paul (y yrs. old), age of
Paul is y/2 yrs. old. Since the differences of there ages
are equal for the 2 events, we have the equation...
x - y = y - y/2
y = (2/3)x
Substituting the equation of y to the equation x + y = 35,
will give us....
x + (2/3)x = 35
therefore, x = 21 (age of Peter)
| Is This Answer Correct ? | 17 Yes | 20 No |
at what rate of interest would compound interest on a sum in two years be 20% more than the corresponding simple interest?
A box consists of 12 poles and 7 pices of nets totally weighing 1.75pounds. If each pole weighs .07 pound and each piece of net weighs .12 pounds. What is the weight of empty box
14 Answers Photon, Photon Infotech,
A cube is coloured red on one face,green on the opposite face,yellow on the another face and blue on a face adjecent to yellow face. The other two faces are left uncoloured. it is then cut into 125 smaller cubes of equal size. Q-1: How many Cubes are coloured blue on one faces,red or green on another face and have four uncoloured faces? Q-2: How many cubes are coloured red on one face,and have the remaining faces uncoloured?
5 Answers AJ, Dunnhumby, Satyam, SSB,
why should i hire you?
Refer to the figure below.A ship started from P and moves at a speed of I miles per hour and another ship starts from L and moving with H miles per hour simultaneously.Where do the two ships meet? ||---g---||---h---||---i---||---j---||---k---||---l---|| PG H I J K L are the various stops in between denoted by || . The values g, h, i, j, k, l denote the distance between the ports.
From 7:00 AM to 11:00 AM it rained 2.25 inches. At 11:00 AM the rain increased to fall at a rate of 1.25 in. every two hours. How many inches of rain landed on the ground by 5:00 PM?
8 man work for 6 days to complete a work. How many men are required to complete same work in 1/2 day.
5 Answers Citicorp, COSL, Wipro,
2 men at same tym start walking towards each other from A n B 72 kms apart. sp of A is 4kmph.Sp of B is 2 kmph in 1st hr,2.5 in 2nd, 3 in rd. n so on…when will they meet i in 7 hrs ii at 35 kms from A iii in 10 hrs iv midway
If we will give you an oppurtunity to join with our bank- whom will you give preference in terms of profit- BANK OR CLIENT??
58,27,12,x,2,1. Find x.
There are 6 consecutive numbers P, Q, R, S, T, U, not necessarily in that order. Given that, Q is 2 less that P, P is 3 less that T and R is 2 less than S, arrange them in an ascending order.
There are three persons A,B,C .A shots the target 6 times out of 7 shots .B shots 4 out of 5 shots .Then what is the probability of hitting the target twice when 2 persons are selected at random.