Explanation:
1. 4% commission on $1400
= 4/100*1400
=0.04*1400
=$56
2. 3% commission on $800
= 3/100*800
=0.03*800
=$24
total earnings = 56+24
total earnings = $80
1. 4% commission on $pp
= 4/100*pp
=0.04*pp
=0.04pp
2. 3% commission on $cc
= 3/100*cc
=0.03*cc
=0.03cc
total earnings = 0.04pp+0.03cc