Question

For each of the following covalent bonds:
 Write the symbols for each element.
 Rearrange the electrons to pair up electrons from each atom.
 Draw circles to show the sharing of electrons between each pair of
atoms.
 Draw the bond structure using chemical symbols and lines. Use one line
for each pair of electrons that is shared.
 Write the chemical formula for each molecule.
a) Carbon + Oxygen
b) Nitrogen + Hydrogen
c) Phosphorous + Chlorine

d) Fluorine + Fluorine

Answer 1

Answer:

The cost price of first computer is Rs 23,625.

The cost price of second computer is Rs 21,375.

Given :

A man bought two computers for rs 45000. he sold one at a loss of 5% and other at a profit of 5%. The selling price of each set is the same.

To find :

find the cost price of each set.

Solution :

Let the cost price of one computer be x

The second computer be ( 45000-x)

Selling price :

he sold one at a loss of 5%:

100 - 5 = 95.

Loss on CP = 95x/100

He sold others at a profit of 5%:

100 + 5 = 105

Profit on CP = (45000-x)*105/100

Cost Price :

Given : Selling price is same for each computer:

=> 95x/100 = (45000-x)*105/100

=> 95x/100 = (45000 * 105)/100 - 105x/100

=> 95x/100 = 47250 - 105x/100

=> 95x/100 + 105x/100 = 47250

=> 200x/100 = 47250

=> 2x = 47250

=> x = 47250/2

=> x = 23625

So, the cost of first computer is Rs 23,625

The cost of second computer is 45000 - 23625 = Rs 21,375.