In an examination a candidate must secure 40% marks to pass.

In an examination a candidate must secure 40% marks to pass. A candidate, who gets 220 marks, fails by 20 marks. What are the maximum marks for the examination?

Tricky approach
According to question,
40% ⇒ 220 + 20
or 40% ⇒ 240

∴ 100% ⇒	240	× 100 = 600
	40

Aliter : Using Rule 24,
a = 40%, b = 220, c = 20

Total Marks =	100(220 + 20)
	40

=	100 × 240	= 600
	40