Question:

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

Updated On: Aug 21, 2024
  • 80
  • 70
  • 90
  • 60
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The Correct Option is A

Solution and Explanation

Given A=72A= 72
Also, A=0.9×BA=0.9×B
B=A0.9⇒ B=\frac{A}{0.9}
=720.9=\frac{72}{0.9}
=80.=80.


And B=1.25×CB=1.25×C
C=B1.25⇒ C = \frac{B}{1.25}
=801.25=\frac{80}{1.25}
=64=64


And C=0.8×DC=0.8×D
D=C0.8⇒ D =\frac{C}{0.8}
=640.8=\frac{ 64}{0.8}
=80.=80.

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