Sarah can type 1800 words in 40 minutes. How many words can she type in 30 minutes?
x/30 = 1800/40
To find out how many words Sarah can type in 30 minutes, we can use the concept of unit rates.
A unit rate is a rate with a denominator of 1. In this case, the unit rate would be the number of words Sarah can type per minute.
We can calculate the unit rate by dividing the total number of words (1800) by the total number of minutes (40):
1800 words ÷ 40 minutes = 45 words per minute
Now that we know the unit rate, we can determine how many words Sarah can type in 30 minutes.
We can multiply the unit rate (45 words per minute) by the number of minutes (30):
45 words per minute × 30 minutes = 1350 words
Therefore, Sarah can type 1350 words in 30 minutes.
Typing speed will vary with the typist's endurance power. Yet, it won't be a constant speed.
The hands will start feeling the fatigue after an hour or so. Typing in a speed contest is different. The duration is short. The only focus for a few minutes will be on speed. Confidence level and vigour will be high.
But typing a text matter is entirely different. I have seen days when I had worked round the clock for 24 hours. But that was with breaks. Yet I was tired and my hands ached. We are humans, not machines.
The last thirty minutes will break the back.