Question

Ben can type 25 words in half a minute. At this rate, how many words can he type in 5 minutes?

Answer 1

Answer:

1. 250 words

2. no the student should have multiplied the unit rate by 5

Answer 2

Answer:

D

Step-by-step explanation:

If we have the unit rate 25wrds/30secs, you would find the unit rate for one minute doing what the student did, which would be 50wrds/1min. So, since the original unit rate is increasing only by 30 seconds, it is 10 times you have to multiply it to get 5 minutes, and that would be 250wrds/5min.

(30+30+30+30+30+30+30+30+30+30)=5 min, and 10 30's