Capgemini
Company
Numerical Ability
Averages
The average weights of three items A, B & C is 500 gm. When another item D is added, the new average becomes 450 gm. If another item E which has weight 60 gm more than D is added, the average of the four items B, C, D & E becomes 500 gm. How much is the weight of item A ?
A)360 gm B)160 gm C)460 gm D)260 gm E)None of these
Read Solution (Total 2)
-
- (A+B+C)/3=500----A+B+C=1500
(1500+D)/4=450----1500+D=1800-----D=300
D=300 AND E=300+60
(B+C+(D+E=660))/4=500
B+C=1340
(A+1340)/3=500
A=160
HENCE OPTION B IS CORRECT - 4 years agoHelpfull: Yes(0) No(0)
- Ans is 160gm
let weight of A,B and C respectively be a,b and cgm
their average weight given is 500gm
thus,a+b+c=1500-eq(1)
also,after D is added avg weith becomes 450gm
let weight of D be d
thus total weight=
a+b+c+d=450*4=1800-eqn(2)
now from (1)
d=300
also
after E is added average of B,C,D and E becomes 500gm
let weight of E be e
also given e=d+60
thus,b+c+d+e=2000-eqn(3)
on solving,
1500-a+300+300+60=2000
a=160gm
I hope it helps - 3 years agoHelpfull: Yes(0) No(0)
Capgemini Other Question