The machine

The machine was in operation for 9 tenths (in a fraction) of eight hours of working time. How long has he been running?

Result

t =  7.2 h
t₂ = 7:12 h

Step-by-step explanation:

$t={\displaystyle \frac{9}{10}}\cdot 8={\displaystyle \frac{36}{5}}={\displaystyle \frac{36}{5}}\text{ h}=7.2\text{ h}$

$t_2=t=7.2={\displaystyle \frac{36}{5}}=7:12\text{ h}$

Try another example

Showing 2 comments:

Math student

The quantity of six times 3 1/2 over 2.

6 months ago  Like

Math student

The quantity of six times 3 1/2 over 2

??
Convert 3 ½ into improper fraction.

3 ½ → 7/2

Convert into Multiplication Process

Lowest Term

= 10 ½

Final Answer: 10 ½

6 months ago  Like

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