Outermost 19403

Twenty young saplings are planted in a row at a distance of 4.5 meters from each other. There is a well by one of the outermost trees. How many meters do we walk when watering trees if we use two watering cans and one is enough to water two trees?

Correct answer:

x =  495 m

Step-by-step explanation:

a=4.5 m  x=2 (3 a+7 a+11 a+15 a+19 a)=2 (3 4.5+7 4.5+11 4.5+15 4.5+19 4.5)=495 m



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