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more than Erica

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by sanju09 » Wed Feb 25, 2009 2:26 am
Robin earns 30% more than Erica. Charles earns 60% more than Erica. How much % is the wages earned by Charles more than that earned by Robin?

A. 23%
B. 18.75%
C. 30%
D. 50%
E. 100%
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by cramya » Wed Feb 25, 2009 2:55 am
Erica->100

Robin->130
Charles->160

130+x/100*130 = 160

x~= 23

A
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by bmlaud » Wed Feb 25, 2009 3:15 am
R = 1.3 E

C= 1.6 E

1.3 E * (1+x) = 1.6 E
or x = 0.233 ~ 23% A
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Can you please explain?

by kanha81 » Sat Feb 28, 2009 12:01 pm
CRamya, Bmlaud-

Can you please explain- This seems quite straightforward; however I am missing some correlation.

I understood the first 2 steps that you both did. I did not understand the last 2 steps of your soln.

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by Uri » Sat Feb 28, 2009 1:36 pm
R = 1.3 * E
C = 1.6 * E

Required percentage = [{ (1.6 * E) - (1.3 * E) } / 1.3 * E] * 100
= 23%
Ans. (A)
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