Lascia che il numero totale di mele sia 56 (LCM di 7,8 & 14).

Quindi Kevin può raccogliere 8 mele al giorno.

Jonathan può raccogliere 7 mele al giorno.

Timothy può raccogliere 4 mele al giorno.

Efficienza totale= 8+7+4 = 19.

Se lavorassero tutti insieme, le mele potrebbero essere raccolte in:-

56/19

= 2,94 o circa 3 giorni.

Spero che questo aiuti!

If it takes them X days, then 1/X = 1/7 +1/14 + 1/8 → X = 2.95 days (approx).

Now, that’s the formulaic approach. Here’s how you would think about it:

1. Suppose there are A apples in the farm, then in 1 day, K, J & T will pick A/7, A/8 & A/14 apples each
2. So working together, they would pick A/7+A/8 + A/14 apples
3. Since there are a total of A apples, it will take them { A/(A/7 + A/8 + A/14) } to pick all the apples on the farm.
4. The As will cancel, and it will simplify to 1 / (1/7+1/8+1/14) = 2.95 days (approx) as we saw from the formula above.

Hope this is helpful!