Chapter 1, Problem 1.87E

Interpretation Introduction

Interpretation:

The percentage of the way from birth to retirement of a $\text{55}$-year-old person for retirement age of $65$ years is to be calculated.

Concept introduction:

The metric system unit is the unit system which is accepted as the standard system of unit internationally. The nonmetric units are the common unit system which is not standard for the parameter to be calculated. The metric system unit is also known as the standard unit system (SI units). The percentage of any number can be calculated by taking the ratio of that number with total possibilities and then multiplying it by $100$.