Question

Arush made 700 grams of 3% salt solution. How much salt did he use?

Answer 1

3% = 0.03

Amount of salt = 700 g x 0.03


Amount of salt used = 21g


Answer: 21g

Answer 2

Arush used 21 grams of salt to make a 700 grams of 3% salt solution, calculated by using the percentage by mass.

Step-by-step explanation:

The student's question is: Arush made 700 grams of 3% salt solution. How much salt did he use? To solve this, we will use the concept of percentages to determine the mass of salt in the solution. A 3% salt solution means that 3 grams of salt are present in every 100 grams of the solution. Therefore, to find out how much salt is in 700 grams of this solution, we set up a simple proportion:

(3 grams of salt / 100 grams of solution) = (x grams of salt / 700 grams of solution)

Solving for x, we get:

x = (3 grams of salt / 100 grams of solution) × 700 grams of solution

x = 21 grams of salt

So, Arush used 21 grams of salt to make his 700 grams of 3% salt solution.