The sum of the ages of Jhony and Charlie is 50. Five years ago Charlie age was three as Jhony's age . How old are Charlie now?

1st condition:

J+C=50..........(1)

2nd condition:

3J-C=10.........(2)

By solving these equation:

J=15 and C=35.

A Competition must have:

No explanation available for this question..

A is the mother of B .

C is the son of A.

D is the brother of E.

E is the daughter of B.

The grandmother of D is

D is the brother of E and E is the daughter of B.

This means that D is the son of B.

Also, A is the mother of B.

So, A is a grand mother of D.

Hence the answer is( a).

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Choose the word that has same or nearly the same meaning of sphere.

A Sphere is a figure formed by the revolution of a circle about its diameter and is synonymous globe..

A salesman bought a battery for $200 and sold it for to $220. What is his profit percent?

Profit=220-200=20

Percentage Profit=20/200*100=10%

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Find the odd man out

No explanation available for this question..

Which day is three days before the day immediately following the day two days before Wednesday:

No explanation available for this question..

Excluding stoppages, the speed of a bus is 54 km per hour and including stoppages it is 45 km per hour. For how many minutes does the bus stop per hour?

Due to stoppages it covers 9 km less.

Time taken to cover 9 km=[(9/54)]*60=10 min.

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Determine if the ratio 2:5 is equal to?

2Ã—4:5Ã—4

8:20

only 8:20 is correct option and equal to 2:3

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Tina can do a piece of work in 20 days. Alfard is 25% more efficient than Tina. Time taken by Alfard to complete the task is?

Ratio of work of Tina and Alfard is=125/100=5/4

Let time taken by Alfard is x

5/4=20/x

x=5/4*20

x=16 days.

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

Z, L, X, J, V, H, T, F, ?, ?

The given sequence consists of two series -- Z, X, V, T, ? and L, J, H, F, ?, both consisting of alternate letters in a reverse order.

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If a boat travels with speed 10 kilometre per hour in still water and speed of stream is 5 kilometre per hour what would be the time taken by boat to go 60 km downstream?

Thus, downstream speed=(x+y)km/he=10+5=15 km/hr

We have,

Time=distance/speed

Time taken by a boat to travel 60 km downstream will be equal to the ratio of distancees travel to downstream speed.

Time taken by a boat= 60/15=4 hr

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Find sequence.

10889,08891,88910,_,91088.

1 digit left shift numbers..

4Ã—5+5Ã·5+4

By using DMAS rule:

=4Ã—5+5Ã·5+4

=4Ã—5+1+4

=20+1+4

=20+5

=25

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Mr. A walks 100 yards straight from his house which is facing north. Then he walks 200 yards in the reverse direction. Then he turns left and walks 100 yards. In which direction is Mr. A from his original position?

No explanation available for this question..

A person covers 108 km in 3 hours. What is his speed in metre per second?

108 km= 108*1000

=108000

3 hours =3*60"60=10800 sec

Speed= Distance/ Time

Speed= 108000/10800

Speed= 10 m/s

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Find odd man out

No explanation available for this question..

10 evacuator works 10 hour daily to remove 2500 cubic feet of Earth in 3 days. How many evacuator work 6 hour daily to remove 5000 cubic feet of Earth in 2 days?

Let x evacuator are required.

Evacuators are inversely proportional to hours and days are directly proportional to work progress

So,

X/10=(10/6)*(5000/2500)*(3/2)

=48

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A group of workers can do a piece of work in 24 days however as 6 of them were absent it took 30 days to complete the work how many people actually worked on the job to complete it?

Let X workers are required to complete the job.

As workers and days are inversely proportional to each other so

(X-6)/x=24/30

30x-180=24x

6x=180

X=30

Theology: religion:: phenology:________

Theology the study of religion and phonology is the study of climate..

Devon is 12 years old. His age is 2 more than half the age of Stephen. Find the age of Stephen.

Let's Steven is equal to x

Devon is equal to 12

given condition: (2 + x) / 2 =12

x = 22

What is the unit digit in(795 - 358)?

Unit digit in 795 = Unit digit in [(74)23 x 73]

= Unit digit in [(Unit digit in(2401))23 x (343)]

= Unit digit in (123 x 343)

= Unit digit in (343)

= 3

Unit digit in 358 = Unit digit in [(34)14 x 32]

= Unit digit in [Unit digit in (81)14 x 32]

= Unit digit in [(1)14 x 32]

= Unit digit in (1 x 9)

= Unit digit in (9)

= 9

Unit digit in (795 - 358) = Unit digit in (343 - 9) = Unit digit in (334) = 4.

So, Option B is the answer.

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What comes next in the series
5, 8, 12, 17, 23 , ?

No explanation available for this question..

Speed of a train is 20 m per second. It can cross a pole in 10 seconds. What is the length of a train?

Length of the train= 20*10

=200 m

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The speed of swimmer along the flow of river is 44 km and against the flow of river is 20 km. What would be the speed of swimmer in still water?

Speed of the swimmer=1(upward stream+ downward stream)/2

=44+20/2=64/2=32

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12-1*0+4/2 = ?

No explanation available for this question..

Recipe of Strawberry jam says 5kg of sugar for 8 kg of strawberries. I have only 5kg of strawberries. How much sugar do I need?

Ratio of cake:

Sugar: Strawberry: : sugar :strawberry

5 : 8 : : x : 5

5/8 = x/5

25/8 = x

3.125 = x

So, we need 3.125 sugar.

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DYMLT is to EZNMU as 45500 is to

No explanation available for this question..

A man drove his car 5 Km towards east ward direction. He turned right went for 3 Km then he turned west and drove for 1 Km. How far is he from the starting point?

No explanation available for this question..

find odd one out ?

V, Z, R, P, L, A, D, F....?

All are even position numbers except A..