Question

За 4 год робітники лісництва посадили 72 дерева.Скільки годин їм треба працювати,щоб посадити 60 дерев,якщо за 1 год вони саджатимуть на 2 дерева більше?

Answer 1

1) 72 : 4 = 18 деревьев в час производительность работников
2) 18 + 2 = 20 деревьев в час увеличение производительности на 2 дерева больше
3) 60 : 20 = 3 часа им понадобиться 

Answer 2

Calculating the Required Work Hours

To calculate the number of hours needed for the workers to plant 60 trees, we can use the given information that they plant 72 trees in 4 years and plant 2 trees more per hour.

First, let's find out how many trees they plant per hour: - Trees planted per hour: 72 trees / 4 years = 18 trees per year - Trees planted per hour: 18 trees / 12 months = 1.5 trees per month - Trees planted per hour: 1.5 trees / (30 days * 24 hours) = 0.00208 trees per hour

Now, we can calculate the number of hours needed to plant 60 trees: - Hours needed: 60 trees / 0.00208 trees per hour = 28846.15 hours

So, the workers would need approximately 28846.15 hours to plant 60 trees if they plant 2 trees more per hour.

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