A) 41.74
B) 43.75
C) 42.25
D) 40.60
Given Formula
SP = Sale price
CP = Cost price
SP = [(100 + Gain%) / 100] x CP
40 = [ ( 100+15 ) /100 ] xCP
⇒ CP = 34.78
To earn 20% profit, use
SP = [(100 + Gain%) / 100] x CP
SP = [ (100 +20 )/100] x34.78
by solving this
SP = 41.74
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