## anonymous 5 years ago On his last three keyboarding tests Sean typed at 41 word per minute, 48 words per minute, and 50 words per minute. Which of these is a good estimate for how long it would take him to type a 460-word document? a.)about twleve minutes b.)about ten minutes c.)about five minutes d.)about 8 minutes

1. anonymous

i think you would first need to get an average because you want an estimate so you would add all 3 speeds and divide by 3 and then take that value divide it into 460.which would be about 10 minutes

2. anonymous

find the average words per minute, you can do that by adding up the three scores and dividing that by three. The once closest to the average is a good estimate. then to find for each time, take the average and multiply it by the number of minutes

3. anonymous

Divide 460 by the average typing rate. $\frac{460}{\frac{1}{3} (41+48+50)} = 9.928..$