Ques:- Five years ago, the total of the ages of a father and his son was 40 years. The ratio of their present ages is 4 : 1. What is the present age of the father?
A. 20 years
B. 30 years
C. 40 years
D. 50 years
Recent Answer : Added by kkrajj On 2022-03-09 16:26:57:
Let x be fathers present age and y be son present age.
5 yrs ago, the age of father and son be x-5 & y-5.
Then,
x-5+y-5=40
x+y-10=40
x+y=50
y=50-x ———–> (1)
ratio between father and son in present age
x:y=4:1
x/y=4/1
x=4y
Apply eq (1) ,
x=4(50-x)
x=200-4x
x+4x=200
5x=200
x=200/5
x=40,,
=> The present age of father is 40.
Ques:- Sum of two numbers is 15. Two times of the first exceeds by 5 from the three times of the other. Then the numbers will be?
Recent Answer : Added by Joseph Owusu On 2022-03-11 17:00:39:
The first number is 10 and the second number is 5
Ques:- If a salesman’s average is a new order every other week, he will break the office record of the year. However, after 28 weeks, he is six orders behind schedule. In what proportion of the remaining weeks does he have to obtain a new order to break the record?
Recent Answer : Added by narendra On 2021-12-25 15:45:39:
Assume there are 52 weeks in one year.
Since he supposed to have a new order for every two weeks, he
needs 52/2 = 26 orders to break the office record.
Now after 28 weeks,he has got only 28/2 -6 = 8 orders.
Hence,he needs 26-8 = 18 new orders in the remaining 24= 52-28 weeks to break the office record.
Compute 24 orders/18 weeks = 4/3 orders/week ,
we see that averagely he has a new order for
every 4/3 weeks in the remaining weeks to break the office record.
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Recent Answer : Added by Iniobong On 2022-08-14 16:44:16:
A
Ques:- A man owns 2/3 of the market research beauro business and sells 3/4 of his shares for Rs. 75000. What is the value of Business.
Recent Answer : Added by Admin On 2020-05-17 12:01:38:
1,50,000
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Recent Answer : Added by Stella Alexander On 2022-09-02 17:04:20:
17,19,23,29
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Recent Answer : Added by MAMIDI LIJITA SREE On 2023-01-21 17:36:29:
1
Ques:- A cable, 16 meters in length, hangs between two pillars that are both 15 meters high. The ends of the cable are attached to the tops of the pillars. At its lowest point, the cable hangs 7 meters above the ground. How far are the two pillars apart?
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Recent Answer : Added by Jim On 2022-09-15 16:37:22:
Spade 13/52 = 1/4
King 4/52 = 1/13
Spade OR King 13/52 + 4/52 – 1/52 (because the King of Spades is in both groups) = 16/52 = 4/13
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A. Christian Dior
B. Coco Chanel
C. Elsa Schiaparelli
D. Hubert de Givenchy
Recent Answer : Added by H Chris Sparks On 2022-04-02 06:57:48:
A. Christian Dior
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A. Brother
B. Nephew
C. Cousin
D. Data inadequate
E. None of these
Ques:- P and Q start a business with Rs.6000 and Rs.8000 respectively. Hoe should they share their profits at the end of one year?
Recent Answer : Added by REGULLA RAJU On 2022-12-20 12:54:08:
Explanation:
They should share the profits in the ratio of their investments.
The ratio of the investments made by A and B =
6000 : 8000 => 3:4
Ques:- Two trains are on same track and they are coming toward each other. The speed of first train is 50 KMs/h and the speed of second train is 70 KMs/h. A bee starts flying between the trains when the distance between two trains is 100 KMs. The bee first flies from first train to second train. Once it reaches the second train, it flies back to the second train ? and so on until trains collide. Calculate the total distance traveled by the bee. Speed of bee is 40 KMs/h. .
Recent Answer : Added by DK BOSS On 2021-07-15 09:17:12:
Answer: 66.67 km approx.
Solution:
Let the first train A move at u km/h.
Let the second train B move at v km/h.
Let the distance between two trains be d km
Let the speed of bee be b km/h
Therefore, the time taken by trains to collide = d/(u+v)
Now putting all the known values into the above equation, we get,
u = 50 km/hr
v = 70 km/hr
d = 100 km
b = 80 km/hr
Therfore, the total distance travelled by bee
= b*d/(u+v)
= 80 * 100/(50+70)
= 66.67 km (approx)
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Recent Answer : Added by pankaj On 2022-05-17 09:08:20:
sorry this question is irrelevant.
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A. 30 km/hr
B. 40 km/hr
C. 45 km/hr
D. 55 km/hr
Recent Answer : Added by Fatima On 2022-09-24 14:33:33:
45 km/hr
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Recent Answer : Added by Admin On 2020-05-17 12:03:14:
1920
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Let x be fathers present age and y be son present age.
5 yrs ago, the age of father and son be x-5 & y-5.
Then,
x-5+y-5=40
x+y-10=40
x+y=50
y=50-x ———–> (1)
ratio between father and son in present age
x:y=4:1
x/y=4/1
x=4y
Apply eq (1) ,
x=4(50-x)
x=200-4x
x+4x=200
5x=200
x=200/5
x=40,,
=> The present age of father is 40.