A student was awarded certain marks in an examination . However , after -re-evalution , his marks were reduced by 40% of the marks that were originally awarded to him so that the new score now became 96. How many marks did the student lose after re-evaluation ?

Options

A. 58
B. 68
C. 63
D. 64

Answer

D

Explanation

(d) Let initial marks of student =x
After Re-evaluation marks reduced by 40% of x
New score =60% of x =96
`=(60)/(100)xx x=96`
`x=(96xx100)/(60)`
`x=160`
Marks lose =160-96=64