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171 / 652
A can complete a piece of work in 8 hours, B can complete in 10 hours and C in 12 hours. If A,B, C start the work together but A laves after 2 hours. Find the time taken by B and C to complete the remaining work.
A2 (1/11) hours
B4 (1/11) hours
C2 (6/11) hours
D2 hours
Answer: Option A
Explanation:A,B,C 1 hour work is=1/8+1/10+12= 37/120
A,B,C work together for 2 hours, so,A,B,C 2 hours work is: (37/120)*2=37/60
remaining work=1-37/60=23/60 (23/60 work is done by B and C together)
B,C 1 hour work is= 1/10+1/12=11/60
23/60 hours work done by B,C= (11/60)* (60/23)=11/23
So B & C and complete the remaining work = 2 1/11 days.
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172 / 652
A, B, C and D are seated in four adjacent seats. They make the following statements.
A : I am not in the third position.
B : I am in the second or third position.
C : I am in the first position.
D : I am in the fourth position.
If three of them are speaking the truth and one of them is lying, who is in the fourth position?
AB
BC
CD
DA
Answer: Option C
Explanation:D is in fourth position
A might be false
So C occupies 1st position
B occupies 2nd position
A occupies 3rd position(As A is false & says its not in 3rd so its in 3rd)
D occupies 4th position
Now all the conditions are satisfied
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173 / 652
Five friends Alex,Bill,Cole ,dan & ed visit a few places taking different routes.All cities are visted by diff number of people.The 5 cities F,G,H,I & J are sequentically statoned.Dan takes the direct route to I and visits two places,F is visted by least no. of people.Bill visits G,but not I,& I visted by odd number of people,If dan visits J,Ed also vists J.Cole dosn't vist H.Alex vists all the places.Ed visits lesser cities then cole.what is the ROUTE followed by ED?
AG,H,J
BG,I,J
CG,J
DNone of these
Answer: Option C
Explanation:Here is no explanation for this answer
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174 / 652
A dealer originally bought 100 identical batteries at a total cost of q rupees. If each battery was sold at 50 percent above the original cost per battery, then, in terms of q, for how many rupees was each battery sold?
Aq/100
B3q/100
C3q/200
DNone of these
Answer: Option C
Explanation:Given bought 100 identical batteries at a total cost of q rupees
SO, Per battery cost = q / 100
If each battery is sold for 50% gain, then selling price = CostPrice * [(100+Gain)/100]
=> q/100 * [(100+50)/100] = 3q/200
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175 / 652
If n = 4p, where p is a prime number greater than 2, how many different positive even divisors does n have, including n ?
ATwo
BThree
CFour
DSix
EEight
Answer: Option C
Explanation:since p is prime greater than 2, then p=odd, thus 4p=even, which means that it has 4 even divisors: 2, 4, 2p, and 4p.
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176 / 652
A bakery opened yesterday with its daily supply of 40 dozen rolls. Half of the rolls were sold by noon and 80 % of the remaining rolls were sold between noon and closing time. How many dozen rolls had not been sold when the bakery closed yesterday?
A4
B5
C8
D2
Answer: Option A
Explanation:If half of the rolls were sold by noon,
Than remaining are 50 % (40) = 20.
Given 80% of the remaining were sold after the noon to closing time
80% (20) = 16
Unsold rolls = (20 - 16) = 4
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177 / 652
There are equal number of boys and girls in a class. If 12 girls entered out, twice the boys as girls remain. What was the total number of students in a class?
A48
B44
C40
D34
Answer: Option A
Explanation:Lets assume total number of boys = y
Total number of girls = x
Given:
Equal number of girls and boys
=> x/y=1/1 => x = y
If 12 girls are entered out,
=> x-12 = x/2
=> x=2x-24 => x=24
So, girls x=24 and boys y=x=24
So, total number of students = x+y
=> 24+24 => 48
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178 / 652
A tank contains 10,000 gallons of a solution that is 5 percent sodium chloride by volume. If 2500 gallons of water evaporate from the tank, the remaining solution will be approximately what percentage of sodium chloride?
A6%
B6.67%
C5.67%
D5%
Answer: Option B
Explanation:Sodium chloride in the original solution = 5% of 10000 = 500
Water in the original solution = 10000 - 500 = 9500
If 2,500 Liters of the water is evaporated then the remaining water = (9500 - 2500) = 7000
Sodium chloride concentration = 500/(500+7000) * 100 = 6.67 %
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179 / 652
If the area of a square region having sides of length 6 cms is equal to the area of a rectangular region having width 2.5 cms, then the length of the rectangle, in cms, is
A14.4 cms.
B14 cms.
C15.4 cms.
DNone of these
Answer: Option A
Explanation:Given:
Area of the square = Area of rectangle
square side length = 6 cms. And rectangle width = 2.5 cms.
6^2 = l*2.5
l = 14.4 cms.
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180 / 652
What is the lowest possible integer that is divisible by each of the integers 1 through 7, inclusive?
A440
B420
C410
D320
Answer: Option B
Explanation:number from 1 to 7, that number should be L.C.M of(1,2,3,4,5,6,7) = 420
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