<p>whats the best approach to this probloem</p>
<p>4 men 4 days 80 ft</p>
<p>how long will 8 men can dig 160 fit?</p>
<p>how long will 8 men dig 80 ft?</p>
<p>how long will 8 men dig 40 ft?</p>
<p>thanks</p>
<p>well using the given: 4 men 4 days 80 ft, create a rate by simplifying. 1 man 1 day 20 ft.</p>
<p>a. 8 men 8 days 160 ft (just by multiplying the rate)
b. using the above, it takes 8 days to get 160 ft for the 8 guys, so 4 days for 80 ft
c. since it takes 8 men 8 days for 160 ft, then it takes 2 days for 40ft.</p>
<p>Woah, wouldn’t it be
a. 4days
b. 2days
c.1day
Or am I completely wrong…</p>
<p>4 men take 4 days to do 80 feet, so 1 man takes 4 days to do 20 feet. It follows that 1 man takes 1 day to do 5 feet. </p>
<p>(A). 8 men can do 40 feet in 1 day (8*5). So it takes 4 days to do 160 feet.</p>
<p>(B). Half of that: 2 days.</p>
<p>(C). Half of that: 1 day.</p>
<p>Use reasoning.</p>
<p>If you double the amount of men, then you will accomplish something in half the time, or do twice the work in the same amount of time…</p>
<p>a) double the men (faster x2), double the work (slower x2) = same amount of time (4 days)
b) double the men (faster x2), same amount of work (no change) = takes half the time (2 days)
c) double the men (faster x2), cut the work in half (faster x2) = takes a quarter of the time (1 day)</p>