Fractions

29 1/2=59/2

so, total nbr of dresses:-
(59/2)/(3/4)=39.32
which is 39 dresses and 1/3 yard left.

29 1/2=59/2=118/4
118:3=39 1/3

Answer A?

I got A. What's the OA?

agatka16 wrote:29 1/2=59/2=118/4
118:3=39 1/3

Answer A?

You're correct that you make 39 and 1/3 dresses.

HOWEVER, each dress is 3/4 of a yard. So 1/3 of a dress is actually 1/3(3/4) = 1/4 of a yard of cloth.

Therefore, the correct answer is (b).

Step (4) of the Kaplan method for PS is to double check your answer to see if it makes sense - if we're dealing with 1/2 a yard and then 1/4s of a yard, how can we possibly get 1/3 as an answer?

Answer isn't A....

We immediately know that there are 39 full uniforms by looking at the possible choices... 27 would obviously be too few uniforms to make with 29.5 yards of material.

So 39*(3/4) = 30-3/4 = 29.25

We have 29.5 yards so 29.5-29.25 = 1/4

Therefore we have 39 uniforms and 1/4 of a yard left over.

B.

A simpler approach will be to just look at the answers:

Ans can not be 27 something so the Ans has to be 39 something

Multiply 39 x 3/4 = 29 1/4

so to make 39 dresses you need 29.25 yard cloth hence you make 39 dresses and are left with 1/4 yard cloth

That's what I just did above....

netigen wrote:A simpler approach will be to just look at the answers:

Ans can not be 27 something so the Ans has to be 39 something

Multiply 39 x 3/4 = 29 1/4

so to make 39 dresses you need 29.25 yard cloth hence you make 39 dresses and are left with 1/4 yard cloth

Hey Netigen,

Though your explaination sounds logical, It is not convincing for me.

Total # of Yards : 29 1/2 = 29.50
Each Cloth Requires : 3/4 => .75

# of Clothes = 29.50 / .75 = 39.33 which is equivalent to 39 clothes and 1/3 yards of remaining cloth.

What's wrong with my approach ? Could you please explain ?

I must be missing some basic concepts.

You're correct that you make 39 and 1/3 dresses.

HOWEVER, each dress is 3/4 of a yard. So 1/3 of a dress is actually 1/3(3/4) = 1/4 of a yard of cloth.

Therefore, the correct answer is (b).

Step (4) of the Kaplan method for PS is to double check your answer to see if it makes sense - if we're dealing with 1/2 a yard and then 1/4s of a yard, how can we possibly get 1/3 as an answer?

I didn't read this explaination, I got it now.[/quote]

gmataspirant wrote:Hey Netigen,

Though your explaination sounds logical, It is not convincing for me.

Total # of Yards : 29 1/2 = 29.50
Each Cloth Requires : 3/4 => .75

# of Clothes = 29.50 / .75 = 39.33 which is equivalent to 39 clothes and 1/3 yards of remaining cloth.

What's wrong with my approach ? Could you please explain ?

I must be missing some basic concepts.

What you calculated is remaining dress.. The Q is asking about remaining yards of the cloth that would be (1/3)*(3/4) = 1/4