Page No.48 Questions 97 to 99
Please can you share the solution?
if both the roots of the quadratic equation lie in the interval (0,3) then a lies in
a.(1,3)
b.(-1,-3)
c.(-root121/91,-root8)
d.none of these
plss explain
TSD; LOD- II Q 5
A pedestrian and a cyclist start simultaneously towards each other from A and B resp., 40 km apart and meet 2 hrs. after the start. They continue their journey in the same direction and the cyclist arrives at A , 7hrs 30 min earlier than pedestrian arrives at B. Speed of pedestrian could be
1) 4 km/h
2)3km/h
HOW TO SOLVE THIS QUES. WITHOUT USING OPTIONS
Hi. I am facing difficulty in grasping the concept of "percentage rule" mentioned in Percantage Unit of Quants by Arun Sharma. Please help me out here. Thanks.
Getting answer as 2:1 but it is given as 1:2.
In what ratio two quantities of coffee powder having the rates of Rs 47 per kg and Rs 32 per kg be mixed in order to get a mixture that would have a rate of Rs 37 per kg?
Options:
a) 1:2 b) 2:1 c) 1:3 d) 3:1 e) 4:1
Kindly explain with the steps of Alligation.
Thank You.:)
Answer: 1:2
A bartender stole champagne from a bottle that contained 50% spirit and replaced what he had stolen with champagne having 20% spirit. The bottle then contained only 25% spirit. How much of the bottle did he steal?
a)80%
b)83.33%
c)85.71%
d)88.88%
How to solve this one ?? :( 😠
In how many ways can a selection be made of 5 letters out of 5As,4Bs,3Cs,2Ds,1E?
a)70
b)71
c)15C5
d)15P5
From 4 gentlemen and 4 ladies , a committee of 5 is to be formed , which consists of a president, a vice president and three secretaries. What will be the no. of ways of selecting the committee with at least one woman holds the post of either president or vice president?
a)420
b)610
c)256
d)512
solution:
[(4C4 x 4C1 x 5!)/3!] + [(4C2 x 4C3 x 5!)/3!] - 4C2 x 4C3 x "2C2" x 2! = 512
why is this 2C2 required ??😠
Suggestion PUYS.. How important it is to solve LOD 3 exercise for Quant.. I mean nothing beats if you solve it.. if someone is running short of time and solves just LOD 1 and LOD 2..does it make sense? Or LOD3 is something you cant ignore at all!!?
Started late prep due to job and now half way down the prep feeling demotivated so this question.. 😟
There are n units of fuel stored at a fixed base. The jeep can carry at most 1 unit of fuel at any time, and can travel 1 unit of distance on 1 unit of fuel (the jeep's fuel consumption is assumed to be constant). At any point in a trip the jeep may leave any amount of fuel that it is carrying at a fuel dump, or may collect any amount of fuel that was left at a fuel dump on a previous trip, as long as its fuel load never exceeds 1 unit. the jeep must return to the base at the end of every trip.
find the least amount of fuel required to produce a final trip of a given distance.
A and B start a two-length swimming race at the same moment but from opposite ends of the pool. They swim in lane and at uniform speeds, but A is faster than B. They first pass at a point 18.5 m from the deep end and having completed one length, each one is allowed to rest on the edge for exactly 45 seconds. After setting off on the return length, the swimmers pass for the second time just 10.5 m from the shallow end. How long is the pool ?
- 55.5 m
- 45 m
- 66 m
- 49 m
0 voters
Please give the explanation of the solution to the question: Remainder when 32^32^32 is divided by 9?
According to a plan a drilling team had to drill to a depth of 270 m below the ground level.For the 1st 3 days the team drilled as per plan.However subsequently finding that their resources were getting underutilised according to plan,it started to drill 8 m more than the plan everyday.Therefore a day before the planned date they had drilled to a depth of 280m.How many metres of drilling was the plan for each day.
a)38m
b)30m
c)27m
d)28m
e)none
how to solve this in short?
A tank of capacity 25lit has an inlet and outlet tap.If both are opened simultaneously the tank is filled in 5 min.But if the outlet flow rate is doubled and taps opened the tank never gets filled up.Which of the following can be the outlet flow rate in lit/min?
a)2
b)6
c)4
d)3
e)5
plz sum1 explain how to solve this
Three cooks have to make 80 idlis.They are known to make 20 pieces every miniute working together.The 1st cook began working alone and made 20 pieces having worked for sometime more than 3 mins.The remaining part of the work was done by the 2nd and 3rd cook working together.It took a total of 8 mins to complete the 80 idlis.How many mins would it take for the 1st cook alone to cook 60 idlis for a marriage party next day.
a)16mins
b)24mins
c)32mins
d)40mins
e)30mins
plz sum1 explain how to solve this
Each of A,B and C needs a certain time to do a certain work.C needs 1 hr less than A to complete the work.Working together they take 30mins to complete 50% of the job.The work also gets completed if A and B start working together and A leaves after 1 hr and B works for a further 3 hrs.How much work does C do per hour?
a)16.66%
b)33.33%
c)50%
d)66.66%
e none
sum1 plz explain how to do this
Two pipes A and B can fill up a half full tank in1.2 hrs.The tank was initially empty.pipe B was kept open for half the time required by pipe A to fill the tank itself.Then pipe A was kept open for as much time as was required by pipe b to fill up 1/3 rd of the tank by itself.It was then found that the tank was 5/6th full.The least time in which any of the pipes can fill the tank fully is.
a)4.8 hrs
b)4 hrs
c)3.6hrs
d)6 hrs
sum1 plz explain how to solve
A tank of 425 lit capacity has been filled with water through 2 pipes, the 1st pipe having being opened 5 hrs longer than the 2nd.If the 1st pipe were open as long as the 2nd,and the 2nd pipe was open as long as the 1st pipe was open,then the 1st pipe would deliver half the amount of water delivered by the 2nd pipe.If the two pipes were open simultaneously the tank would fill up in17 hrs.How long was the 2nd pipe open?
a)10hrs
b)12hrs
c)15hrs
d)18hrs
plz explain how to solve this
Mini and Vinay are quiz masters preparing for a quiz.In x mins Mini makes y questions more than Vinay.If it were possible to reduce the time needed by each to make a question by 2 mins,then in x mins Mini would make 2y questions more than Vinay.How many questions does Mini make in x mins?
a)1/4[2(x+y)- square root(2x^2+4y^2)]
b)1/4[2(x-y)-square root(2x^2+4y^2)]
c)Either a or b
d)none
Ans a
Sum1 plz explain how to solve this
Two men and a woman are entrusted with a task.The 2nd man needs 3 hrs more to cope with the job than the second man and the woman would need working together.The 1st man working alone would need as much time as the second man and the woman working together.The 1st man working alone would spend 8hrs less than the double period of time the second man would spend working alone.How much time would the 2 men and the woman need to complete the task if they all worked together?
a)1hr
b)3hr
c)4hr
d)5hr
Ans:a
plz explain how to solve this