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A music system has been on sale,with 20%off.On top of that,you have a special coupon, which gives you an additional rebate of 10%. The sales tax 10%. In

total,you ended up in paying Rs.792. what was the original price of the music system

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Given final price = Rs. 792 Let the original price = x. first offer given = 20% 20% of x = x×(20/100) = 0.2x then price would become = x-0.2x = 0.8x

After that, addition rebate given = 10% 10% of 0.8x = 0.8x × (10/100) = 0.08x then price would become = 0.8x - 0.08x = 0.72x

After that, tax added = 10% 10% of 0.72x = 0.72x × (10/100) = 0.072x then price would become = 0.72x + 0.072 x = 0.792x

Thus 0.792x = 792 ⇒ x = 792/0.792 ⇒x = Rs. 1000 Thus original price is Rs. 1000.