1.)
[tex]1.) \: \: \: \: \: = 66 \frac{2}{3} [/tex]
explanation
The units of speed (km per hour) indicate which quantity you have to divide by which.
As the question is given in fraction form it is better to answer in fraction form.
If you find the answer as a decimal it is
66.66666. . which is a recurring decimal. It can be rounded to 66.6 but then it is no longer accurate.
A fraction is exact.
2.)
To find gallons per hour, divide the gallons by the hours.
That would be 1/2 of the fuel consumed in 2 hrs
Take half of 5 which is 2 and 1/2
Take half of 2/3 which is 1/3
_________________
add 2 + ½ + ⅓
_________________
½ = ³/6
⅓ = 2/6
3/6 + 2/6 = ⅚
2 + 3/6 +2/6 = 2 + ⅚
_________________
2 and 5/6 gallons are consumed each hour
3.)
[tex]13 \div \frac{1}{2} [/tex]
multiply by the reciprocal
[tex]13 \times 2[/tex]
multiply
[tex] = 26[/tex]
4.)
[tex] = 4[/tex]
5.)
[tex] = \frac{9}{50} [/tex]
6.)
Simplify
- [tex] = \frac{4}{5} [/tex]
- [tex] = \frac{7}{8} [/tex]
- [tex] = \frac{1}{15} [/tex]
- [tex] = \frac{1}{9} [/tex]
- [tex] = \frac{2}{11} [/tex]
- [tex] = \frac{2}{3} [/tex]
- [tex] = \frac{3}{20} [/tex]
- [tex] = \frac{1}{6} [/tex]
- [tex] = \frac{27}{49} [/tex]
hope it helps
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