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
[tex]20 \% \times x = 300\\\\\frac{20}{100} \times x = 300\\\\0.2x = 300\\\\Divide\ both\ sides\ by\ 0.2\\\\x = 1500[/tex]
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,
[tex]\frac{x}{100} \times 2000 = 25\\\\x \times 20 = 25\\\\x = \frac{25}{20}\\\\x = 1.25[/tex]
Thus 1.25 % of 2 kg is 25g
