Question based on profit loss and SP/CP Andrew buys mangoes at Rs. 200 per hundred. At what price should he sell a gross in order to make a profit of 20% in spite of 20% decay( Here one gross means= 12 dozens)
Cost price of 1 mango will be Rs. 2
remaining mangoes= $80$
Selling price of 80 mangoes= $80*120/100*2=192$
What to do next? I am stuck after this

If he buys $N$ mangoes and $20$% are decayed, he can only sell $0.8N$ mangoes. If he wants to sell $144$ mangoes, then $0.8N = 144$ mangoes, which gives $N=180$ mangoes.
The cost of $180$ mangoes is $C=180*2=360$ Rs.
To make $20$% profit the selling price S must fulfill $$\frac{S-C}{C}=0.2$$
So $S= 1.2C = 432$ Rs.
