Question

If 11% is lost on books sold at Rs 10.68, what was the cost price of the books? At
what price should they be sold at to yield a profit of 10%​

Answer 1

Step-by-step explanation:

Given ,

L % = 11 % S.P = rs 10.68 C.P = 100 S.P / 100 - L %

= 100x10.68 / 100-11 1068 / 89 = rs 12 To find

S.P = C.Px100 + P % / 100 To gain 10 % , selling price should be , S.P = 12x100 + 10 / 100 12x110 / 100 66/5 13.2 Therefore , S.P = rs 13.2

Answer 2

Answer:

Cost Price of the books is 12 ruppes on selling the books at a loss of 11 %.

They should sell the books at 13.2 rupees to yield a profit of 10%.

Step-by-step explanation:

Let the CP be 100 then SP will be (100-11) =89 ( As there is a loss of 11%)

Or, Let the SP be 89 then the CP will be 100 .

Let the SP be 1 then CP will be 100/89

If the Sp is 10.68 then CP will be = 100/89 × 10.68 = 12 rupees.

Then,

The SP of the books to gain a profit of 10% will be = CP + CP × 10% = 12 + (12 ×10%) = 12 + 1.2= 13.2 Rupees.