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

b

step-by-step explanation:

2. angles qrt and qst both measures 156 degrees.

step-by-step explanation:  

we have been given a diagram of a circle and we are told that measure of arc qvt is 156 degrees.  

we can see from our given diagram that angle qrt and angle qst subtends to arc qvt.

since we know that angles subtended by the same arc at the circumference are always equal.

by angle subtended by same arc theorem, measure of angle qrt and angle qst will be equal to the measure of arc qvt.

therefore, angles qrt and qst both measures 156 degrees and 2nd statement is the correct choice.