Question

Erica can run 16\dfrac{1}{6} 6 1 ​ start fraction, 1, divided by, 6, end fraction of a kilometer in a minute. Her school is 34\dfrac34 4 3 ​ start fraction, 3, divided by, 4, end fraction of a kilometer away from her home. At this speed, how long would it take Erica to run home from school?

Answer 1

Given:

Erica can run $\frac{1}{6}$ of a kilometer in 1 minute

The distance between Erica's school and her home = $\frac{3}{4}$ of a kilometer

To find:

Time taken by Erica to run home from school

Solution:

It is given that Erica runs the distance from her school to home at the same rate of $\frac{1}{6}$ of a kilometre in 1 minute.

So, we will use the simple unitary method to find the time taken by her to cover $\frac{3}{4}$ of a kilometre.

Now,

If Erica covers $\frac{1}{6}$ of a kilometer in 1 minute

Then, Erica covers a kilometer in = $\frac{1}{\frac{1}{6}}$ = 6 minutes

∴ Erica covers  $\frac{3}{4}$ of a kilometre in = $\frac{3}{4} \:\times\:6$ = $\frac{3}{2} \:\times\:3$ = $\frac{9}{2}$ = 4.5 minutes

Thus, Erica would take 4.5 minutes to run home from school at the same speed.

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Answer 2

Answer:

The answer is 4.5

Step-by-step explanation:

I just got this correct on khan.