plz help

[ahmad209]

hello there por favor, El Señor i want any one to help me in the folloeing iq questions ....thanks


1-it takes 5 cooks 1 hour to cook dinner . if one of them is missing , how many minutes will it take the remaining 4 to prepare the same meal. (66-75-80-72-78) answer is 75.......i answer it man 72 how is that 2 be 75


2-Alice got a nice box of candy for her birthday, but couldn't decide which
piece to eat first. She likes everything but jelly filled. According to the box,
she has three different coatings (dark, white, or milk chocolate). The centers
are either cream, fudge, caramel, or jelly, and all of those except the jelly come
plain or with nuts. There are 3 and 1/2 dozen pieces. Assuming all
possible combinations are included equally, what are the odds that Alice won't
choose a jelly filled candy ?
a. 7 to 1
b. 9 to 1
c. 6 to 1
d. 9 to 2
e. 14 to 3 answer:c

3-If 7 ballerinas dance for 8 hours and lose a total of 20 pounds,
how many more ballerinas dancing would it take to lose a total
of 20 pounds in only 4 hours if the new dancers lost weight only
half as fast as the original 7 ?
a. 07
b. 21
c. 27
d. 14
e. 12
answer is 14

[lime]

1. Just make equations.

work/(5*p) = 60
work/(4*p) = ?

Solving them gives 75.

[ahmad209]

what do u mean man by work/(5*p) = 60

[lime]

work - total amount of work.
p - productivity per person.

[ahmad209]

thanks lime but por favor, El Señor 2 answer me the other questions

[lime]

2.
Total number of non-jelly candies = 3*3*2*2 = 36.
Total number of jelly candies = 3*2 = 6.

Their proportion = 36/6 = 6/1.

3.
Let x be amount that "regular" ballerina loses per hour. Then

7*8*x = 20
7*4*x + y*4*x/2 = 20.

We need to find "y". Since right parts of both equations are equal,

7*8 = 7*4 + y*4/2

which gives

y = 14.

[lime]

I think that next time you would better post these questions in General GRE Math forum, because they are more relevant to quantitative section of general test, rather than subject. Here is this sub-forum:

GRE Math - TestMagic Forums

[ahmad209]

ok lime but thanks 2 u very much ....

[ahmad209]

SORRY MAN CAN U DISCUSS TO ME Total number of non-jelly candies = 3*3*2*2 = 36.<<<CAN U TELL ME what each number refere to ...what the number difinition
Total number of jelly candies = 3*2 = 6. <<<also here

Their proportion = 36/6 = 6/1.


and here man i cannot understand what u do in thefollowing
7*8*x = 20
7*4*x + y*4*x/2 = 20.

[anuragsodhi]

man u need to know the basics (no offense) . por favor, El Señor refer to nova book for gre.. some good cocepts there..

2)total is 42
jelly can be choc, white, or dark -->> 3
caramel can be choc(plain), choc (nuts), dark(plain) , dark(nuts), white(plain), white(nuts) -->> 6
similarly for fudge -->> 6
similarly for cream -->> 6

add them u get 21 . now they are equally distributed so if u double all the no. u get 42 sweets...

now with jelly is 6 and without are 36 so 36/6=6

But this is for explanation only u need to be quick in combinations.. like

(if there are 3 ways a,b,c and again 3 ways e,f,g so effectively there r 9 ways 3x3 ae,af,ag,be,bf,bg,ce,cf,cg.. same concept here)

jelly -->1x3 (3 is the no. of coatings, 1 is for jelly only)
others (becoz they r similar) --> 3x3x2 =18 (3 is for three centers, then 3 is for coatings, and 2 is for plain or nuts)

so the odds r 18/3 (jelly/nonjelly) = 6

to make the total 42 u may multiply both numerator and denominator by 2 but the odds remain unchanged

I hope u understood
best of luck