Question

S.p=10.68 C.p= x profit =10% loss=11%

Answer 1

SP = 10.68

CP = x
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Case-1 : Profit = 10%

$CP = SP × \frac{100}{100+profit} \\ \\ x = 10.68 \times \frac{100}{100 + 10} \\ \\ x = 10.68 \times \frac{100}{110} \\ \\ x = 9.71$

Cost price was ₹9.71

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Case-2 : loss = 11%

$CP = SP × \frac{100}{100 - loss} \\ \\ x = 10.68 \times \frac{100}{100 - 11} \\ \\ x = 10.68 \times \frac{100}{89} \\ \\ x = 12$

Cost price was ₹12

Answer 2

SP = 10.68

CP =x
given Profit = 10%

x=10.68×100+10/100​

x=10.68×110/100​x=9.71​

Cost price was ₹9.71

loss = 11%

=> 10.68×100/89
= 12 rs.

answer is 12