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Yellow stripe Q

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by vishubn » Fri Oct 03, 2008 11:39 pm
A solid yellow stripe is to be painted in the middle of a certain highway. If 1 gallon of
paint covers an area of p square feet of highway, how many gallons of paint will be
needed to paint a stripe t inches wide on a stretch of highway m miles long? (1 mile =
5,280 feet and 1 foot = 12 inches)
A. (5,280 mt) / 12p
B. (5,280 pt) / 12m
C. (5,280 pmt) / 12
D. (5,280)(12m) / pt
E. (5,280)(12p) / mt

vishu
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Source: — Problem Solving |

by stop@800 » Sat Oct 04, 2008 2:45 am
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by Azntycoon » Sat Oct 04, 2008 10:21 am
What's the OA? I'm getting D

i) Convert feet into inches & miles:

feet to "t" iches = 12/t
feet to "m" miles = 5280m

ii) Calculate formula knowing that the gallons unit is derived by = sq feet * (gallon/sq feet)

(12/t)(5280m)*(1/p)
((12m)(5280)/t)/p
(12m)(5280)/tp
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Re: Yellow stripe Q

by Morgoth » Sat Oct 04, 2008 3:18 pm
vishubn wrote:A solid yellow stripe is to be painted in the middle of a certain highway. If 1 gallon of
paint covers an area of p square feet of highway, how many gallons of paint will be
needed to paint a stripe t inches wide on a stretch of highway m miles long? (1 mile =
5,280 feet and 1 foot = 12 inches)
A. (5,280 mt) / 12p
B. (5,280 pt) / 12m
C. (5,280 pmt) / 12
D. (5,280)(12m) / pt
E. (5,280)(12p) / mt

vishu
I will go with A as well.

t inches
t/12 feet.

m miles
5280*m feet.

total area = 5280m * t/12 square feet

p square ft / gallon

5280m * t/12 / p = 5280mt/12p.

Thus, A.

OA?
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by vishubn » Sat Oct 04, 2008 5:47 pm
OA is A!

Vishu

thans
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by Azntycoon » Sun Oct 05, 2008 6:09 am
thanks Morgoth... careless mistake on my part in setting up the Q.
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