Which of the following statements is true about the bohr model of the atom?
a. an electron orbits in spherical orbits at any distance from the nucleus.
b. an electron orbits in differently shaped orbits at discrete distances from the nucleus.
c. an electron orbits in spherical orbits at discrete distances from the nucleus.
d. an electron orbits in differently shaped orbits at random distances from the nucleus.

Let the price of 1 litre of milk be  x$

Let the price of 1 loaf of bread be y$

According to the problem

333x + 555y =11

444x+444y=10

On subtracting the two,

We get

(333x+555y=11) * 444

(444x+444y= 10) * 333

(-)     (-)         (-)

147852x + 246420y =4884

147852x + 147852y = 3330

(-)            (-)                  (-)

 98568y = 1554     

           y = 1554/98568     

              = 0.0157$          

                 =0.02$    

Price of 1 loaf of bread= 2 cents    

On putting the value of y 

333x + 555*0.0157 = 11333x  + 8.7135 = 11333x = 2.2865x = 2.2865/333x = 0.00068$   = 0.01$

Price of 1 litre of milk = 1 cent

1.5