In an examination A got 25% marks more than B, B got 10%

In an examination A got 25% marks more than B, B got 10% less than C and C got 25% more than D. If D got 320 marks out of 500, the marks obtained by A were

If D gets 100 marks, then
Marks obtained by C = 125
Marks obtained by B

=	125 × 90
	100

Marks obtained by A

=	125 × 90	×	125
	100		100

∵ 100 =	125 × 125 × 90
	10000

∴ 320 =	125 × 125 × 90 × 320	= 450
	1000000