Question

EXENU
1. Determine which of the following are in proportion:
(a) 18, 36, 9, 18
(b) 14,35,16,40
of the following:
(c) 80,32,60,24 (d) 72,18,64,12​

Answer 1

(a)18:36::9:18

Reason :- (18/36=9/18)=(1/2=1/2)

(b)14:35::16:40

Reason :-( 14/35=16/40)=(2/5=2/5)

(c)80:32::60:40

Reason :- (80/32=60/40)=(5/2=5/2)

(d) Only option d is not in proportion (Ans)