A shopkeeper marks the price of an rs550 and gives the costumers a discount of 10% in this way he gains rs75 on article how much percent will the market price be more then the cost price?!

Below.

Step-by-step explanation:

When dealing with discounts, to find the amount that will be subtracted from the price, you will need to move the decimal two places (I think, don't quote me on that) to the right and then multiply the cost of the item with the discount. Seeing as the discount is 10% off, we have to multiply the cost of the item times the discount. (If the price of the rs550 is $100, we would times 100 by 0.10 to get $90.00 for the price of the item.)

Examples:

10% off = 0.10

60% off = 0.60

26% off = 0.26

etc.

c is the final answer! : )

(0,-3) see attached graph

step-by-step explanation:

a. to solve the system, graph the two equations.

x = y+3 becomes y=x-3 has m=1/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move up 1 unit and 1 unit to the right. plot a point and connect.

y=-4x+3 has m =-4/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move down four units and to the right 1 unit. plot a point and connect.

the solution is the point (x,y) where the two lines intersect. by the graph below it is (0,-3).

b. to solve by substitution, substitute y = -4x-3 into x= y+3

x= (-4x-3) +3

x=-4x

5x=0

x=0

now substitute x = 0 back in to find y.

y= -4(0)-3

y=0-3

y=-3

solution is (0,-3)

c. use elimination by adding the equations together.

x-y=3

4x+y=-3

5x=0

x=0

then substitute into one equation to find y.

y=-4(0)-3

y=-3