一种收音机每台售价今年比去年降低25%,今年每台售价36元,去年每台售价多少元?

问题描述:

一种收音机每台售价今年比去年降低25%,今年每台售价36元,去年每台售价多少元?

36÷(1-25%),
=36÷75%,
=36÷0.75,
=48(元);
答:去年每台售价48元.