Answer :

Given that, selling price of coolers = Rs.3990 each.On first cooler, gain = 5% and on second cooler, loss = 5%

For first cooler -

Gain = Selling price - cost price

cost price of first cooler = Rs.3800

For second cooler -

Loss = cost price - Selling price

cost price of second cooler = Rs.4200

total cost price = Rs.3800 + Rs.4200

= Rs.8000

And total selling price = Rs.3990 × 2

= Rs.7980

cost price>selling price loss

And loss = total cost price - total selling price

= Rs.8000 - Rs.7980

= Rs.20

= 0.25%

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