Hay 30 estudiantes en la clase del Sr. Call. Un tercio de los estudiantes viaja a algún lugar durante las vacaciones de verano. De los que viajan, una quinta parte sale del país. ¿Cuántos estudiantes viajan fuera del país?
porfavor urgente

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47 - 90 = 43

43 - 180 = x

x = 137

c = 0.429t

step-by-step explanation:

the constant rate at which carlos harvests cassava is 35 minutes per 15 cassavas 15/35 = 0.429 cassava per minute

therefore, an equation that models the number of cassava (c) that harvest carlos in a time (t) is the following:

where t is the time in minutes.

this means that when 35 minutes have elapsed 15 cassava have been harvested, at 70 minutes 30 cassava have been harvested and so on.