Question

answer the question ​

Answer 1

Step-by-step explanation:

$\frac{1}{3} + \frac{1}{4} + x = 1 \\ \frac{7}{12} + x = 1 \\ x = 1 - \frac{7}{12} \\ x = \frac{5}{12}$

$speed = \frac{distance}{time} \\ 25 = \frac{1}{3t} \\ t = \frac{1}{75}$

$speed = \frac{distance}{time} \\ 25 = \frac{1}{3t1} \\ t1 = \frac{1}{75} \\ similarly \: we \: will \: get \: t2 \: and \: t3 \\ as \: \frac{1}{120} \: and \: \frac{5}{12 \times 50} \\ \\ now \: avarage \: speed \: = \\ \frac{total \: distance}{total \: time} \\ \frac{1}{ \frac{1}{75} + \frac{1}{120} + \frac{1}{120} } \\ \frac{1}{ \frac{1}{75} + \frac{1}{60} } \\ \frac{1}{ \frac{135}{4500} } \\ \frac{4500}{135}$

Answer 2

Answer:

answer

is

Step-by-step explanation:

I think your answer is 2)

I hope it's a helpful for you