A team of 3 tractors, each working 8 hours a day, can plough a field in 5 days. How many days would it take 2 tractors, each working 10 hours a day, to plough the same field? Also, answer questions 11

The work done is proportional to the number of tractors, hours per day, and number of days.
Initial work units = $3 \text{ tractors} \times 8 \text{ hours/day} \times 5 \text{ days} = 120 \text{ tractor-hours}$.

Let $D$ be the number of days for the new scenario.
New work units = $2 \text{ tractors} \times 10 \text{ hours/day} \times D \text{ days} = 20D \text{ tractor-hours}$.

Since the same field is being ploughed, the total work units are equal.

It would take 2 such tractors, working 10 hours a day, $\boxed{\text{6 days}}$ to plough the same field.

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The problem asks to convert Euros to Kenyan Shillings and then remaining Kenyan Shillings to Japanese Yen. However, the provided table only lists exchange rates for US Dollars and UK Pounds. The exchange rates for Euros to Kenyan Shillings and Kenyan Shillings to Japanese Yen are not provided in the given information. Therefore, this problem cannot be solved with the information available.

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The times for each athlete are 45 sec, 43 sec, 44 sec, and 45 sec.
Total time = $45 + 43 + 44 + 45 = 177 \text{ seconds}$.

(Since $177 = 2 \times 60 + 57$)

The race started at 1:35:31 p.m.
Add 2 minutes and 57 seconds to this time.

So the time is 1:37:88 p.m.
Since there are 60 seconds in a minute, convert 88 seconds:

Add this 1 minute to the minutes column:

The completion time is 1:38:28 p.m.
The team completed the race at $\boxed{\text{1:38:28 p.m.}}$.