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30 Jan 2012, 12:58
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Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
45%
(medium)
Question Stats:
71% (02:32) correct
29%
(02:31)
wrong
based on 198
sessions
History
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Not Attempted Yet
In a picnic 60% people ate two hotdogs, 30% people ate one hamburger, and 10% people ate one hotdog. The total number of hotdog and hamburgers consumed is 80. How many hamburgers and hotdogs are consumed?
A. hotdogs = 75; hamburgers = 5.
B. hotdogs = 70; hamburgers = 10.
C. hotdogs = 65; hamburgers = 15.
D. hotdogs = 60; hamburgers = 20.
E. hotdogs = 55; hamburgers = 25.
Answer:
A. hotdogs = 75; hamburgers = 5.
B. hotdogs = 70; hamburgers = 10.
C. hotdogs = 65; hamburgers = 15.
D. hotdogs = 60; hamburgers = 20.
E. hotdogs = 55; hamburgers = 25.
Answer:
Total people 50, total hotdogs 65, total hamburgers 15
30 Jan 2012, 13:04
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docabuzar
let the total # of earthlings be 'x'.
total # of hamburgers= .3x
total # of hotdogs = (.6x)*2 + .1x ( .6x*2 b'coz they ate 2 each.)
now, total food = .3x +1.2x+.1x
this is given to be 80
equating we get x= 50
hence # of hamburgers = .3x = 15
# of hotdogs= 1.3x = 65
80 Total - 65 hotdogs = 15 hamburgers
65 hotdogs, 15 hamburgers
30 Jan 2012, 13:06
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I cracked it like this:
60% people ate 2 hotdogs = 60% x 2 = 1.2
60% people ate 1 burger = 30% x 2 = 0.3
10% people ate 1 hotdogs = 10% x 1 = 0.1
TOtal = 1.2+0.3+0.1 = 1.6
Hotdaogs = (1.2+0.1)/1.6 x 80 = 65
Burgers = 0.3/1.6 x 80 = 15
Pls confirm is this right
60% people ate 2 hotdogs = 60% x 2 = 1.2
60% people ate 1 burger = 30% x 2 = 0.3
10% people ate 1 hotdogs = 10% x 1 = 0.1
TOtal = 1.2+0.3+0.1 = 1.6
Hotdaogs = (1.2+0.1)/1.6 x 80 = 65
Burgers = 0.3/1.6 x 80 = 15
Pls confirm is this right
