Question

The equation s = w - 10e / t models the speed in words per minute, s, at which someone types. The speed, s, is related to the number of words typed, w, the number of errors, e, and the time spent typing in minutes t.

a) Rearrange the formula to isolate w.
b) How many words can Jack type if his typing speed is 50 words per minute, he types for 5 minutes, and he makes 2 errors?
a) w = st + 10e
b) w = (st - 10e) / 2t
c) w = st + 10t
d) w = (st - 10e) / t

Answer 1

To isolate w, rearrange the equation as w = st + 10e. To find the number of words Jack can type, substitute the given values into the equation w = st + 10e.

Step-by-step explanation:

To isolate the variable w in the equation s = w - 10e / t, we can rearrange the equation as w = st + 10e. This isolates w on one side of the equation.

To find the number of words Jack can type, we can substitute the given values into the equation w = st + 10e. Given that s = 50 words per minute, t = 5 minutes, and e = 2 errors, we have w = (50 * 5) + (10 * 2). Simplifying this expression, we get w = 250 + 20, which gives us w = 270 words.