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28 Dec 2017, 21:49
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Difficulty:
25%
(medium)
Question Stats:
83% (02:39) correct
17%
(02:50)
wrong
based on 64
sessions
History
Date
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Not Attempted Yet
In a weight-lifting competition, the average (arithmetic mean) of Jenai's three lifts was 500 pounds. If twice the weight of her first lift was 200 more pounds than the weight of her second lift, and her third lift was 40 more pounds than her second lift, what is the weight, in pounds of her first lift?
A. 1360
B. 744
C. 544
D. 372
E. 228
A. 1360
B. 744
C. 544
D. 372
E. 228
E.g
#1 list= a
#2 lift= b
#3 lift= c
(a+b+c)/3= 500........... (1)
2a=200+b........…(2)
c=40+b…………(3)
(1)(2)(3)
(a+b+c)/3= 500
(100+1/2b)+b+(40+b)=500.3
140+5/2=1500
b=544
(2)
2a=200+b
2a=200+544
a= 372
Answer: D
Sent from my iPhone using GMAT Club Forum
#1 list= a
#2 lift= b
#3 lift= c
(a+b+c)/3= 500........... (1)
2a=200+b........…(2)
c=40+b…………(3)
(1)(2)(3)
(a+b+c)/3= 500
(100+1/2b)+b+(40+b)=500.3
140+5/2=1500
b=544
(2)
2a=200+b
2a=200+544
a= 372
Answer: D
Sent from my iPhone using GMAT Club Forum
