2 Answers

Marsden · Answer 1 · 2018-05-10T07:50:08+0000

Answer: 13.5 minutes

Explanation:

Given : Sophie can type 128 words in 3 minutes.

Then , rate of typing =
$\frac{\text{Number of words}}{\text{Time}}$

=(128)/(3) (1)

Let x be the minute taken by her to type 576 words.

Then, rate of typing =
(576)/(x) (2)

From (1) and (2), we have

$(576)/(x)=(128)/(3)\\\\\Rightarrow\ x=(3*576)/(128)=13.5\text{ minutes}$

Hence, she will take 13.5 minutes to type 576 words.

Please log in or register to add a comment.