Question

PLEASE HELP !! 20 POINTS

The equation used to estimate typing speed is S = (w – 10e), where S
is the accurate typing speed, w is the number of words typed in 5 minutes and e is the number of errors.

A) Ignacio can type 55 words per minute (wpm). In 5 minutes, she types 286
words. How many errors would you expect her to make?

B) If Alexis types 300 words in 5 minutes with 5 errors, what is his typing speed?

C) Johanna receives a report that says her typing speed is 65 words per minute. She knows that she made 4 errors in the 5-minute test. How many words did she
type in 5 minutes?

Answer 1

a) 23 errors

b) 250 wpm

c) 105 words

Explanation:

a) 55 = (286 - 10e)

-286 -286

-231 = -10e

e = 23. 1 or 23 errors

b) S = (300 - 10(5))

= 300 - 50

S = 250

c) 65 = (w - 10(4))

65 = w - 40

105 = w

Hope this helps.