0. The marked price of a mobile set is RS 20,000. A shopkeeper allows a discount of 15% and makes a profit of Rs. 2000. What is
it's cost price?

In what layer of the sun is energy transfers between atoms

What best describes the dropping height of a ball that bounces back up to a height of 45 cm

Which of the following types of stars is most likely to end up as a supernova? in graph a, the curve peaks at 800 nm, in the red section of the visible light spectrum. in graph b, the curve peaks at 550 nm, in the green section of the visible light spectrum. in graph c, the curve peaks at 450 nm, in the blue section of the visible light spectrum. in graph d, the curve peaks at 300 nm, in the violet section of the visible light spectrum. a b c d