A shopkeeper sells not books at the rate of ₹ 457 each and earns a commission of 4% He also sells pencil boxes at the rate of ₹ 80 each and earns a commission of 20%. How much amount of commission will he he earn in two weeks, if he sells 10 notebooks and 6 pencil boxes a boy?

∴ S.P of the notebook = ₹457
∴ Commission on one notebook = ₹ (4 x 457)/100
and commission on 10 notebooks = 10 x (4 x 457)/100 = ₹ 18280
Now,S.P of the pencil box = ₹ 80
∴ Commission on 1 pencil box = ₹ (80 x 20)/100
Commission on 6 pencil boxes = (80 x 20 x 6)/100 = ₹ 96
Hence ,total commission of 1 day = (182.80 + 96 ) = ₹ 278.80
Thus, total commission of 2 weeks = 278.80 x 14 = ₹ 3903.20