Step : Expressing the given statement as percent
Given,
80 paise as a percent of Rs.4.
[Multiply first quantity by 100 and divide by second quantity, at the same time write the sign of percentage]
∴80 paise as a percent of Rs.4=80400×100%
[∵Rs.1=100 paise]
=804%=20%
Hence, 80 paise is 20% of Rs.4.