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swarupa

· started a discussion

· 1 Months ago

regarding (Question: 89870.0 )

i am not able to understand the given explanation

Question:
If efficiency of A is 30% more efficient than B, B is 20% more efficient than C, C is 10% less efficient than D, then the efficiency ratio of A, B, C and D are respectively:-
Options:
A) 351:270:225:250
B) 125:100:120:90
C) 370:281:225:250
D) 351:270:250:225
E) None of these
Solution:

Let efficiency of B=100, then A=130

B:C=120:100

C:D=90:100


A: B : C : D


=ABC : B2C : BC2 : BCD (Given formula)

= 130 : 100:

120 : 100 :

90 : 100

= 1404 : 1080 : 900 : 1000

=  351 : 270 : 225 : 250

Knowledge Expert

· commented

· 1 Months ago

@swarupa :
Let efficiency of B=100, then A=130
B:C=120:100
C:D=90:100

A : B : C : D
=ABC : B^(2)C : BC^(2) : BCD (Given Formula)
= 130 : 100:
120 : 100 :
90 : 100
= 1404 : 1080 : 900 : 1000
= 351 : 270 : 225 : 250

swarupa

· commented

· 1 Months ago

pls explain it clearly

swarupa

· commented

· 1 Months ago

pls explain it clearly
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