Question

A T.V set is sold for Rs.8800 at a loss of 20%. Find its cost price?

Answer 1

answer

SP = rs.8800
loss = 20%
cP = ?

$cp = \frac{100}{100 - l\%} \times sp \\ cp = \frac{100}{100 - 20} \times 8800 \\ cp = \frac{100}{80} \times 8800 \\ cp = 100 \times 110 \\ cp = rs .11000$