A shopkeeper sells his items using a faulty balance which measures 25% less. He then marks up his items 15%

A shopkeeper sells his items using a faulty balance which measures 25% less. He then marks up his items 15% above the cost price. If he also gives a discount of 10%, then find his net profit percentage on 1 kg items.

a) 33%

b) 38%

c) 30%

d) 45%

Sol: