Problem Solving

PS001


The cost of picture frame M is $10.00 less than 3 times the cost of picture frame N. If the cost of frame M is $50.00, what is the cost of frame N?

A) $13.33
B) $16.66
C) $20.00
D) $26.66
E) $40.00


Answers in three days of time

I could of made a mistake but i believe the answer is A, $13.33

M = 3N - 10

M = 50

therefore

50 = 3N - 10
.
.
.
N = $13.33

limits660 wrote:I could of made a mistake but i believe the answer is A, $13.33

M = 3N - 10

M = 50

therefore

50 = 3N - 10
.
.
.
N = $13.33

Answer is 20. Limits if you substitute your answer you should satisfy the question. $10 less than 3 times $13.33 is approximately equal to 30 and not 50.

Ahhhhh, now i see it

thanks

PS002

A piece of embroidered fabric is held in a circular wooden hoop. If the area of the fabric framed by the hoop is x square feet, and the hoop has a radius of x feet, then x equals

A) 2*pi
B) 2
C) pi/2
D) 1/2
E) 1/pi

ajith wrote:PS002

A piece of embroidered fabric is held in a circular wooden hoop. If the area of the fabric framed by the hoop is x square feet, and the hoop has a radius of x feet, then x equals

A) 2*pi
B) 2
C) pi/2
D) 1/2
E) 1/pi

Is the answer E?

ajith wrote:PS002

A piece of embroidered fabric is held in a circular wooden hoop. If the area of the fabric framed by the hoop is x square feet, and the hoop has a radius of x feet, then x equals

A) 2*pi
B) 2
C) pi/2
D) 1/2
E) 1/pi

area of the circle with radius x = pi * x^2 = x

=> x = 1/pi

Answer is E.

Monica wrote:

ajith wrote:PS002

A piece of embroidered fabric is held in a circular wooden hoop. If the area of the fabric framed by the hoop is x square feet, and the hoop has a radius of x feet, then x equals

A) 2*pi
B) 2
C) pi/2
D) 1/2
E) 1/pi

Is the answer E?

Welcome to the forums Monica, answers will be posted in the same thread on the 3rd day. Keep checking the thread, and participate actively. Thanks

ajith wrote:PS001


The cost of picture frame M is $10.00 less than 3 times the cost of picture frame N. If the cost of frame M is $50.00, what is the cost of frame N?

A) $13.33
B) $16.66
C) $20.00
D) $26.66
E) $40.00


Answers in three days of time

3days are over and now I have to answer...


3N-10=M=50
N=(50+10)/3=20
Answer is C.

PS003

A certain company that sells only cars and trucks reported that revenues from car sales in 1997 were down 11 percent from 1996 and revenues from truck sales in 1997 were up 7 percent from 1996. If total revenues from car sales and truck sales in 1997 were up 1 percent from 1996, what is the ratio of revenue from car sales in 1996 to revenue from truck sales in 1996?
A. 1 : 2
B. 4 : 5
C. 1 : 1
D. 3 : 2
E. 5 : 3

ajith wrote:PS003

A certain company that sells only cars and trucks reported that revenues from car sales in 1997 were down 11 percent from 1996 and revenues from truck sales in 1997 were up 7 percent from 1996. If total revenues from car sales and truck sales in 1997 were up 1 percent from 1996, what is the ratio of revenue from car sales in 1996 to revenue from truck sales in 1996?
A. 1 : 2
B. 4 : 5
C. 1 : 1
D. 3 : 2
E. 5 : 3

Rc and Rt are car and truck revenues in 96.
0.89Rc and 1.07Rt are care and truck revenues in 97.

0.89Rc + 1.07Rt = 1.01Rc + 1.01 Rt

0.06Rt = 0.12Rc => Rc/Rt = 1/2 (A)

PS004


3 boxes of supplies have an average (arithmetic mean) weight of 7 kilograms and a median weight of 9 kilograms. What is the maximum possible weight, in kilograms, of the lightest box?

1
2
3
4
5

ajith wrote:PS002

A piece of embroidered fabric is held in a circular wooden hoop. If the area of the fabric framed by the hoop is x square feet, and the hoop has a radius of x feet, then x equals

A) 2*pi
B) 2
C) pi/2
D) 1/2
E) 1/pi

E it is

pi*x^2=x

x=1/pi

ajith wrote:PS004


3 boxes of supplies have an average (arithmetic mean) weight of 7 kilograms and a median weight of 9 kilograms. What is the maximum possible weight, in kilograms, of the lightest box?

1
2
3
4
5

Answer is 3.

Total weight = 3 x 7 = 21

x+y+z = 21

y = 9

Maximise x => minimise z, which gives x = 3.

I am sorry, guys

I am on a break till 19th of this month ,

Be back after that.

If somebody can manage this this thread till then I will be grateful,

Miss u guys,

Ajith