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a salesman is paid a monthly salary plus a commision based as percentage on sales.if on the sales of rs 20000 and rs 25000 in 2 months,he received rs1600 and rs 1750 respectively,find his monthly salary and tha rate of commission paid on sales

Let the monthly salary be x and the commission rate be y%.

For the first month, the salesman earned Rs. 1600, so we can write:

x + 0.01y(20000) = 1600

Simplifying this equation, we get:

x + 200y = 160000 (Equation 1)

For the second month, the salesman earned Rs. 1750, so we can write:

x + 0.01y(25000) = 1750

Simplifying this equation, we get:

x + 250y = 175000 (Equation 2)

Now we have two equations with two unknowns (x and y). We can solve for them using any method of our choice. Here, we will use the elimination method.

Multiplying Equation 1 by 5 and Equation 2 by -4, we get:

5x + 1000y = 800000 (Equation 3)

-4x - 1000y = -700000 (Equation 4)

Adding Equations 3 and 4, we get:

x = 100000

Substituting this value of x in Equation 1, we get:

100000 + 200y = 160000

Simplifying this equation, we get:

y = 300

Therefore, the salesman's monthly salary is Rs. 100000 and the commission rate is 3%.