.
= .
T is mass of tin, C is mass of copper.
= .
Solve this proportion for T to get
T = = 96.
Answer. 96 gram of tin.
There is a bunch of lessons on proportions in this site:
- Proportions
- Using proportions to solve word problems
- Using proportions to estimate the number of fish in a lake
- HOW TO algebreze and solve this problem using proportions
- OVERVIEW of lessons on proportions