A salesman received a basic salary of sh 50000 a year together with a commission of 6% on the value of goods sold and a car allowance of sh 2.50 per km. Find the total amount he received in a year in which he sells goods worth sh 625000 and travels 10000km.

Commission on goods sold = 6% of 625000

= (6/100) * 625000
= 37500 sh

Car allowance = 2.50 x 10000
= 25000 sh

Total earnings = Basic salary + Commission + Car allowance
= 50000 + 37500 + 25000
= 112500 sh

Therefore, the salesman received a total of 112500 sh in a year.