Two numbers are more than the third number by 20% and 50%

Two numbers are more than the third number by 20% and 50% respectively. First number is what per cent of the second number ?

Let third number = 100
First number = 120
Second number = 150
Required percentage

=	120	× 100 = 80%
	150

Aliter : Using Rule 30,
Required percentage

=		100 + 20		× 100%
		100 + 50

=	120	× 100%
	150

=	4	× 100% = 80%
	5