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03 Jul 2019, 23:47
Kudos
Bookmarks
B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
89% (01:38) correct
11%
(02:40)
wrong
based on 44
sessions
History
Date
Time
Result
Not Attempted Yet
Amar is 30 years younger than Lauri. In 5 years, Lauri will be three times as old as Amar. How old will Lauri be in 10 years?
A. 40
B. 50
C. 60
D. 70
E. 80
A. 40
B. 50
C. 60
D. 70
E. 80
04 Jul 2019, 00:01
Kudos
Bookmarks
Let age of amar be A and age of lauri be L
A=L-30
L+5=3(A+5)=3(L-30+5)=3L-75
Therefore L+5=3L-75
2L=80
L=40
After 10 yrs,
L+10=40+10=50 YRS
Posted from my mobile device
A=L-30
L+5=3(A+5)=3(L-30+5)=3L-75
Therefore L+5=3L-75
2L=80
L=40
After 10 yrs,
L+10=40+10=50 YRS
Posted from my mobile device
Archit3110
Major Poster
04 Jul 2019, 02:10
Kudos
Bookmarks
Bunuel
given
3a+15=l+5
a=l-30
solve for l
l= 40 in 10 years ; 50
IMO B
