Question

If a is 60% of b, b is 40% of c, and c is 20% of d, then 6d is what percent of 20a?

A. 0.625
B. 6.25
C. 62.5
D. 625
E. 6250

Answer 1

Answer:

a=0.6b

b=0.4c

c=0.2d

a=0.6*.4*.2d

a=.048d

6d=x*20*a

6d=.01x*20 * 0.048d

.01x= 6.25

x=625