Ques:- Evaluate the sum of all even integers between 99 and 301?
Recent Answer : Added by Jagadeesh On 2022-09-15 16:37:00:
Summation of 301 – summation of 99
=41550
Summation of n=((n*n+1)/2)
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Ques:- 9 men and 12 boys finish a job in 12 days, 12 men and 12 boys finish it in 10 days. 10 men and 10 boys shall finish it in how many days?
Recent Answer : Added by MyDotcollection On 2022-03-09 16:42:06:
8days
Ques:- The sum and the product of two numbers are 25 and 144 respectively, Find the difference of the number is?
Recent Answer : Added by kalum breach On 2022-04-02 07:00:47:
9 and 16
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Ques:- At a special sale, 5 tickets can be purchased for the price of 3 tickets. If 5 tickets are purchased at the sale, the amount saved will be what percent of the original price of the 5 tickets?
A. 20%
B. $$33$$$$1 / {3}$$%
C. 40%
D. 60%
Recent Answer : Added by narendra On 2022-09-18 09:03:10:
C
Ques:- Two trains of equal length when moving in opposite direction takes 5 sec. to cross each other completely and when moving in same direction takes 15 sec. Find the ratio of their speed.
Recent Answer : Added by Deven Sharma On 2023-05-31 18:18:48:
Let’s assume the length of each train is ‘L’ and the speeds of the two trains are ‘V₁’ and ‘V₂’ respectively.
When the trains are moving in the opposite direction, their relative speed is the sum of their individual speeds. The total distance they need to cover is the sum of their lengths. Since they cross each other completely in 5 seconds, we can set up the following equation:
(V₁ + V₂) × 5 = 2L
When the trains are moving in the same direction, their relative speed is the difference between their individual speeds. The total distance they need to cover is the difference between their lengths. Since they cross each other completely in 15 seconds, we can set up the following equation:
(V₁ – V₂) × 15 = 2L
Now, let’s solve these equations to find the ratio of their speeds.
From the first equation, we have:
(V₁ + V₂) × 5 = 2L
V₁ + V₂ = (2L) / 5
From the second equation, we have:
(V₁ – V₂) × 15 = 2L
V₁ – V₂ = (2L) / 15
Now, let’s substitute this value back into the first equation to find V₂:
(4L) / 15 + V₂ = (2L) / 5
V₂ = (2L) / 5 – (4L) / 15
V₂ = (6L – 4L) / 15
V₂ = (2L) / 15
Therefore, the speed of the second train is (2L) / 15.
The ratio of their speeds is given by:
(V₁ / V₂) = ((4L) / 15) / ((2L) / 15)
(V₁ / V₂) = 4L / 2L
(V₁ / V₂) = 2
So, the ratio of their speeds is 2:1.
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Ques:- Motorboat A leaves shore P as B leaves Q; they move across the lake at a constant speed. They meet first time 600 yards from P. Each returns from the opposite shore without halting, and they meet 200 yards from. How long is the lake?
Recent Answer : Added by vunanok On 2022-04-02 07:00:16:
800 yards
Ques:- The cost of four dozen proof machine ribbons and five dozen accouting machine ribbons was Rs.160/-. If one dozen accounting machine ribbons cost Rs.20/-, what is the cost of a dozen proof machine ribbons?
Recent Answer : Added by Admin On 2020-05-17 12:00:20:
15
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Recent Answer : Added by Geoffrey On 2022-09-15 16:35:49:
Yes, it is possible by using a HDMI cable
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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:- A train 280 m long, running with a speed of 63 km/hr will pass a tree in?
Recent Answer : Added by Jay On 2022-08-14 16:45:18:
28 Sec
Ques:- LCM and HCF of two numbers are 48 and 8 respectively. If one of the numbers is 16, the second number is
A. 36
B. 24
C. 18
D. 12
Recent Answer : Added by MONICA On 2021-11-22 17:29:35:
ANS = 24.
16 = 2^4
24 = 2^3 x 3
H.C.F of 16 and 24 = 8
L.C.M will be 48
Ques:- General Gasslefield, accused of high treason, is sentenced to death by the court-martial. He is allowed to make a final statement, after which he will be shot if the statement is false or will be hung if the statement is true. Gasslefield makes his final statement and is released. What could he have said?
Summation of 301 – summation of 99
=41550
Summation of n=((n*n+1)/2)