A) reena saves rs 300 from her salary , if this 20% of her salary. find her salary.

b) what percent of 2kg is 25g

a)  Reena salary is $ 1500

b) 1.25 % of 2 kg is 25g

Solution:

Given that,

a) Reena saves rs 300 from her salary

This is 20% of her salary

Let "x" be the original salary

Then, we can say,

20 % of x = 300

Solve for x

Thus her salary is $ 1500

b) what percent of 2kg is 25g

We know that,

1 kg = 1000 g

2 kg = 2000 g

Let "x" be the required percent

Then, we can say,

x % of 2000 g is 25 g

Therefore,

Thus 1.25 % of 2 kg is 25g

infinitely many solutions

step-by-step explanation:

we have been given the equation;

2(2x + 3) = -4 + 2(2x + 5)

we need to determine the value of x.

2(2x + 3), we expand this expression to obtain 4x + 6

similarly 2(2x + 5) will become 4x + 10

now we have;

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 10 - 4

4x + 6 = 4x + 6

the expression on the left hand side is identical to the one on the right hand side. therefore, we are looking at just a single straight line whose equation is;

y = 4x + 6

consequently, we shall have infinitely many solutions