Dr Raju's Institute of Graduate Studies Abroad

[nehareddy4u]

1. Find the area of an isosceles triangle, in which each one of the equal sides is 5.1 m and third side 4.6m.
9.45 m2
10.46 m2
11.26 m2
12 m2
23.46 m2




2. A can do a job in 20 days. B can do another job that requires two times the effort needed to do the first job, in 30 days. If both A and B work together to complete both the jobs, how many days will it take them to finish it?
24 days
24 days
25 days
25 days
20 days



3. A man can walk at a speed of 80 kmph. But he walks for only 45 minutes in every one hour period.
Column A
Column B
The distance, he can travel in five hours
30 km
Column A is greater than Column B.
Column B is greater than Column A.
Both columns are equal.
The relationship between the columns cannot be determined.



4. A, B and C can complete a work in 20, 24 and 30 days respectively.
Column A
Column B
The time required to complete the work if A, B and C work together.

The time required by B alone to complete one third of the work.
Column A is greater than Column B.
Column B is greater than Column A.
Both columns are equal.
The relationship between the columns cannot be determined.




5. The marked price of two items is x and y respectively, but if a discount of 20% is given on the item with the marked price as ‘x’, and 10% discount is given on the other item, the ratio of their selling price will be 3:4. What is the ratio of their marked price (x and y)?
9:11
9:16
27:32
27:64
3:4




6. What is the LCM of 5, , 4.5?
90
50
45
30
13.5




7. A and B can do a piece of work in a and b days respectively.
Column A Column B
Number of days required for A and B together to do the work.
Column A is greater than Column B.
Column B is greater than Column A.
Both columns are equal.
The relationship between the columns cannot be determined.

[nehareddy4u]

[rajat.tiet]

The answers are:

1. B
2. ??
3. A
4. C
5. C
6. A
7. B

Can you please explain me the 2nd question?
Also, lemme know if there are any corrections to be done....

Thanks....

[venugopalreddy24]

hey rajat canu u explain me the 1st answer pls

[therani.arch]

1. ??
2. D
3. A
4. B
5. C
6. C
7. B

[gunjan777]

1)b
2)??
3)a
4)c
5)c
6)c
7)d

_________________
GBSONI

[gunjan777]

[quote="gunjan777"][list]
1)b
2)??
3)a
4)c
5)c
6)c
7)b
_________________
GBSONI

[zahir_usa]

Please explain the answers of 2,4 and 6 no. questions........

[therani.arch]

Correction in my answer:

4. C


Explanation for 2.

Job 1 A can complete in 20 days
Job 2 B can complete in 30 days

Job 2 twice as difficult as 1 job

So,
job 2 A can complete in 40 days
job 1 B can complete in 15 days

Combined A & B job-2 can be completed in 120/7 days.
Combined A & B job-1 can be completed in 60/7 days.

Both jobs= 180/7
which is answer D

---X---


Anyone please give explanation for 1 question.

[nehareddy4u]

2) answer..




now explain 1st one any one..[/img]

[nehareddy4u]

hey explain 1,4,5.. pls..

[nehareddy4u]

any one explain 1,4,5.. ???????????

[jajijaji]

explanation for 1st answer

from the data the base is 4.6, and other 2 sides are 5.1 5.1


draw a perpendicular line from the center of base

so you will get two right angled triangles. . .

with this figure you can find the height of the original triangle. .


formula. . . 2.3^2 + (height^2)= 5.1^2

(here 2.3 is half of the base. . .


bye this you can substitute it in the original formula. .

[nehareddy4u]

why have u taken 4.6 as the base.. it can be any side also..
5.1 as base.. and the remaining sides as 4.1 and 5.1.. at that time..

[jajijaji]

since our aim is to find the area , the three dimensions can be placed anywhere. the above calculation procedure is done with proper mathematical rules.

so the answer is correct .

you will be getting the same answer if interchange the sides and calculate it with some other math rules what you know

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got it!