A shopkeeper bought a book for Rs 300. Due to the damage caused during transportation, he sold it for Rs 270. Find the loss percentage. (1) 10% (2) 15% (3) 30% (4) 20%

10%

Step-by-step expla

loss percent = 100 - x

× 300= 270

100

multiply both sides by 100

100 - x

100 × × 300 = 270× 100

100

300( 100 - x) = 27000

30000 - 300x = 27000

30000 - 27000 = 300x

3000 = 300x

divide both sides of the equation by 300

3000 = 300x

300 300

x = 10

step-by-step explanation:

what was your answer?

yx = 36

step-by-step explanation:

cos f = opposite side/ hypotenuse

cos f = yw / yx

we know cos f = 4/9 and yw =16

4/9 = 16/yx

multiply each side by yx

4/9 yx = 16/ yx * yx

4/9 yx = 16

multiply each side by 9/4

9/4 * 4/9 yx = 16 *9/4

yx = 36