[nemo1]

Originally Posted by shalinikrishna2

If IxI denotes the greatest integer less than or equal to x, is [x] zero?

1) [2x] = 0
2) [3X] = 0

Please answer with explanation.

From statement (1): it is sufficient that [x] = 0. because, 0<=x<0.5.
similarly, from statement (2); it is also sufficient that [x] = 0, because, 0<=x<0.333...

therefore, either statement is sufficient to answer the question. hence option (D).

[aliz_khanz]

The average weight of the women in a room is 120 lbs, and the average weight of the men in the room is 150 lbs. What is the average weight of the people in the room?

(1) There are twice as many men as women in the room.

(2) There are a total of 120 people in the room.

[Nipunbans]

IMO = A

1) if women = x, men = 2x, Avg wt = 140 ---> Sufficient
2) we don't know ratio , so can't find avg wt-------> Insufficient

Originally Posted by aliz_khanz

The average weight of the women in a room is 120 lbs, and the average weight of the men in the room is 150 lbs. What is the average weight of the people in the room?

(1) There are twice as many men as women in the room.

(2) There are a total of 120 people in the room.

[surupab]

Originally Posted by aliz_khanz

The average weight of the women in a room is 120 lbs, and the average weight of the men in the room is 150 lbs. What is the average weight of the people in the room?

(1) There are twice as many men as women in the room.

(2) There are a total of 120 people in the room.

It can be solved by 1st option only. If number of women is W, then numbe rof men is 2W. Total weight of women is 120W and total weight of men in 300W. So average weight will be 140. But by second option there is no definite solution.

[aliz_khanz]

OA for the above question is A ! u r right gys !! thanks !

[deepakraam]

Originally Posted by aliz_khanz

The average weight of the women in a room is 120 lbs, and the average weight of the men in the room is 150 lbs. What is the average weight of the people in the room?

(1) There are twice as many men as women in the room.

(2) There are a total of 120 people in the room.

I will go with option A for the above DS

[nemo1]

cud anybody help me out with this one(along with the explanations), please?

A jewelry dealer initially offered a bracelet for sale at an asking price that would give a profit to the dealer of 40 percent of the original cost. What was the original cost of the bracelet?
(1) After reducing this asking price by 10 percent, the jewelry dealer sold the bracelet at a profit of $403.
(2) The jewelery dealer sold the bracelet for $1,953.

[Nipunbans]

(1) Let C.P. = x, Profit = .40x, Asking Price(A.P.) = 1.40x
But AP reduced by 10% = New AP = 0.90 X 1.40x => 1.26x
So, with new AP, Profit reduced to 26% because CP is constant and AP decreases.
SO, 403 = 0.26x --> x = 1550
So, A is Sufficient

( 2) there is "initially" word given in the Q, and nothing is given if the initial asking price and final selling price are same. I think we can't consider them equal. So, this will be insufficient.

SO, IMO = A

Originally Posted by nemo1

cud anybody help me out with this one(along with the explanations), please?

A jewelry dealer initially offered a bracelet for sale at an asking price that would give a profit to the dealer of 40 percent of the original cost. What was the original cost of the bracelet?
(1) After reducing this asking price by 10 percent, the jewelry dealer sold the bracelet at a profit of $403.
(2) The jewelery dealer sold the bracelet for $1,953.

[deepakraam]

Originally Posted by nemo1

cud anybody help me out with this one(along with the explanations), please?

A jewelry dealer initially offered a bracelet for sale at an asking price that would give a profit to the dealer of 40 percent of the original cost. What was the original cost of the bracelet?
(1) After reducing this asking price by 10 percent, the jewelry dealer sold the bracelet at a profit of $403.
(2) The jewelery dealer sold the bracelet for $1,953.

I will go with option A for the above DS

[surupab]

Option A is sufficient to answer the question. Option B is insufficient

Originally Posted by aliz_khanz

The average weight of the women in a room is 120 lbs, and the average weight of the men in the room is 150 lbs. What is the average weight of the people in the room?

(1) There are twice as many men as women in the room.

(2) There are a total of 120 people in the room.