A salesman is paid on commission as follows 1.5% the first ksh 20000 worth of sales
2% on the next ksh 60000
5% on any other extra sales
In one month he received a commission of sh 10200 determine the total sales he made for the whole month
0.015 * 20,000 = 300
0.02 * 60,000 = 1200
.05x = 10200 - 300 - 1200 = 8700
x = 174,000
so the total sales were 20,000 + 60,000 + 174,000 = 254,000