riapatterson riapatterson

04-07-2017
Mathematics

contestada

A scientist wants to estimate the number of roads living near a lake.
On Friday she catches 90 toads and tags them. She releases the toads.
On Saturday she catches 50 roads and 7 of them are tagged.
Estimate the number of toads that live near the lake.

Respuesta :

EdgeOfSzon EdgeOfSzon

04-07-2017

90 + 50 = 140
140 - 7 = 133
130 - 140

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