Question

A construction crew has just finished building a road. The road is 12 kilometers long .if the crew worked for 5 2/5 days, how many kilometers of road did they build each day?

Answer 1

Answer:

2.22

Step-by-step explanation:

all you have to do is divide 12 by 5.4

Answer 2

Answer:

The build 2 $\frac{2}{9}$ kilometers each day

Step-by-step explanation:

Set up an equation

The road is 12 kilometers long and it was worked on for 5 $\frac{2}{5}$ days.

So, to set up the equation, divide 12 by 5 $\frac{2}{5}$

$\frac{12}{5\frac{2}{5}}$  Make 5 $\frac{2}{5}$ into an improper fraction

Multiply 5 by 5, then add 2

$\frac{12}{\frac{27}{5}}$

You can't divide a number by a fraction, so you kcf (keep it, change it, flip it)

So keep the 12, change the division to multiplication, flip $\frac{27}{5}$

12 x $\frac{5}{27}$ Multiply straight across

$\frac{12}{1}$ x $\frac{5}{27}$ = $\frac{60}{27}$

Simplify $\frac{60}{27}$

$\frac{60}{27}$ = $\frac{20}{9}$  The top and the bottom both have 3 in common

Then make $\frac{20}{9}$ into a mixed number

2 $\frac{2}{9}$ 9 goes into 20 2 times and has a remainder of 2