Question

Q#4: Amirah can type 720 words in 16 minutes, lixin can type 828 words in 18 minutes and Shirley can
type 789 words in 19 minutes. Who is the fastest typist ? l (1)​

Answer 1

Given data : Amirah can type 720 words in 16 minutes, Lixin can type 828 words in 18 minutes and Shirley can

type 789 words in 19 minutes.

To find : Who is the fastest typist ?

Solution :

Here, we need to find typing speed of Amirah

• Typed word by Amirah = 720
• Time taken by Amirah = 16 minute

Now,

⟹ speed of Amirah = typed word by Amirah/time taken by Amirah

⟹ speed of Amirah = 720/16

⟹ speed of Amirah = 45 word/minute _______[1]

Similarly, to find typing speed of Lixin

• Typed word by Lixin = 828
• Time taken by Lixin = 18 minute

Now,

⟹ speed of Lixin = typed word by Lixin/time taken by Lixin

⟹ speed of Lixin = 828/18

⟹ speed of Lixin = 46 word/minute _______[2]

Similarly, to find typing speed of Shirley

Typed word by Shirley = 789

Time taken by Shirley = 19 minute

Now,

⟹ speed of Shirley = typed word by Shirley/time taken by Shirley

⟹ speed of Shirley = 789/19

⟹ speed of Shirley = 41.53 word/minute or 41 ½ (approx) word/minute _______[3]

Now, from [1], [2] and [3] we know that

speed of Amirah < speed of Lixin > speed of Shirley

{45 < 46 > 41 ½}

Answer : Lixin is the fastest typist with speed of typing 46 word/minute.

Answer 2

Answer:

hope it helps you dear brainliest