In an examination, the score of A was 10% less than that of B, the score of B was 25% more than that of C, and the score of C was 20% less than that of D. If A scored 72, then the score of D was
Correct Answer: 80
Given A= 72
Also, A=0.9×B => B=A/0.9=72/0.9=80.
And B=1.25×C => C = B/1.25=80/1.25=64
And C=0.8×D => D =C/0.8 = 64/0.8=80.
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