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Paul and krystal spent 1 1/2 hours at the pool. for half of that time,they swam laps what equation can be used to find the amount of time they spent swimming laps
a.1 1/2 - 1/2
b.1 1/2 ÷1/2
c.1/2 × 1 1/2
d.1/2 + 1 1/2​
BEST ANSWER WILL BE MARKED BRAINLIEST

Respuesta :

fieryanswererft

Answer:

C.  [tex]1\dfrac{1}{2}[/tex]  *  [tex]\dfrac{1}{2}[/tex]

Explanation:

They swam for total  [tex]1\dfrac{1}{2}[/tex]  hours. Half of this hours they spent swimming laps.

Thus the equation:  [tex]1\dfrac{1}{2}[/tex]  *  [tex]\dfrac{1}{2}[/tex] =  [tex]\dfrac{3}{4}[/tex] hours

don't confuse!   [tex]\frac{1}{2}[/tex] refers to ÷ 2

Easier method:

  • given that they swam for [tex]1\dfrac{1}{2}[/tex], that's 1.5 hours in decimals.
  • half hours: 1.5 ÷ 2 = 0.75 hours which is  [tex]\dfrac{3}{4}[/tex] hours in fraction.

  • we can find  [tex]\dfrac{3}{4}[/tex] from option C only thus its our answer.

Solution:

Note that:

  • If a fraction is being divided by another fraction, that fraction will become it's reciprocal and the sign will change to multiplication.
  • Example: x/6 ÷ y/2 = x/6 × 2/y

The question is saying "half of 1 1/2".

  • => half of 1 1/2 = 1 1/2 ÷ 2 = 1 1/2 x 1/2

Option C is correct.

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