Find the ratio of the following:

(a) 30 minutes to 1.5 hours

(b) 40 cm to 1.5 m

(c) 55 paise to Rs 1

(d) 500 ml to 2 litres

(a) We have,

30 minutes = = 0.5 hours

Therefore,

Required ratio =

=

=

(b) We have,

1.5 m = 150 cm

Therefore,

Required ratio =

=

(c) We have,

Rupee 1 = 100 paise

Therefore,

Require ratio =

=

=

(d) We have,

1 litre = 1000 ml

Also,

2l = 2000 ml

Therefore,

Required ratio =

=

=

=