Question

cost price is 110 and marked price is 120 and loss is 10rs and what is the selling price and discount​

Answer 1

Cost price = 110

Loss = 10

then Selling price will be 110-10= 100

Marked price = 120

now we have to find that 120 is how much % more than100

so [ (120-100)/120]×100

50/3 = 16.6666%

so discount = 16.666% and selling price is 100 rs

Answer 2

Answer:

Let the tens digit of the required number be x and the units digit be y. Then,

x+y=12 .........(1)

Required Number = (10x+y).

Number obtained on reversing the digits = (10y+x).

Therefore,

(10y+x)−(10x+y)=18

9y−9x=18

y−x=2 ..........(2)

On adding (1) and (2), we get,

2y=14⟹y=7

Therefore,

x=5

Hence, the required number is 57.