Question

the body of a person who weighs 50 kg mg contains round 2 * 10/2 grams of sodium chloride how much sodium chloride is contained in the bodies of 1.8 * 10/3 people who each way 50kg represent the answer in scientific notation

Answer 1

We will use the ratio method to solve the question

∵ 50 kg contains 2 x 10^2 grams of sodium chloride

∵ We need to find the amount of sodium chloride in 1.8 x 10^3 people

who weigh 50 kg

At first, we must find the weight of 1.8 x 10^3 people

Now we will use the ratio method

→ kg: gm

→ 50. : 2 x 10^2

→ 9 x 10^4 : m

→ By using cross multiplication

`\begin{gathered} 50* m=9*10^4*2*10^2 \\ 50m=18*10^(4+2) \\ 50m=18*10^6 \end{gathered}`

Divide both sides by 50 to find m

`\begin{gathered} (50m)/(50)=(180)/(50)*10^5 \\ m=3.6*10^5 \end{gathered}`

The answer is A