WEBVTT
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The distance š¯‘‘ Scarlett travels in her car while driving 58 miles per hour for 1.5 hours is given by the equation š¯‘‘ over 1.5 equals 58.
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How far did she travel?
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So, the equation that weā€™ve been given š¯‘‘ over 1.5 equals 58 contains all the other information that weā€™ve been given.
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Because it tells us that Scarlett has been driving at 58 miles per hour, well, thatā€™s part of our equation, and it tells us that sheā€™s been driving for 1.5 hours.
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Thatā€™s also in our equation.
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So, what we need to do is rearrange our equation to solve to find š¯‘‘.
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So, what our equation tells us is that š¯‘‘ divided by 1.5 is equal to 58.
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Well, if we want to find š¯‘‘ and weā€™ve got š¯‘‘ divided by 1.5, then what we need to do is multiply it by 1.5.
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And then, weā€™d just be left with š¯‘‘.
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However, whatever we do to one side of the equation we must do to the other side of the equation.
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So, what weā€™re gonna do is multiply both sides of our equation by 1.5.
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So, what weā€™re gonna get is š¯‘‘ is equal to.
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And now we can work out the right-hand side of the equation.
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So, what Iā€™m gonna do is split up the calculation to work it out.
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So, first weā€™re gonna have one multiplied by 58, which is just equal to 58.
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So then, weā€™re gonna have 0.5 multiplied by 58.
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And thatā€™s because we want 1.5 multiplied by 58, so we can divide it into two parts, one and then 0.5.
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Now to carry out this calculation, what weā€™re gonna do is divide 58 by two.
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Well, we can do that mentally.
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Or we can also use the bus stop method.
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So, to use the bus stop method, we see how many twos go into five.
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Well, twos into five go two because two multiplied by two is four remainder one.
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And then, weā€™re gonna see how many twos go into 18 cause we carry the one.
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And that is nine.
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So, we can see that 58 divided by two is 29.
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So, now we have 58 and 29.
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So, what we do is we add these together.
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So, first of all, we have eight add nine, which gives us 17.
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So, we have a seven, and then we carry the one.
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And then, we have one add five, which is six, add two, which is eight.
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So, we get 87.
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So, we can say that 1.5 multiplied by 58 is 87.
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So therefore, we can say that š¯‘‘ equals 87.
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And if we take a look back at the question, we can see that the unit is gonna be miles.
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So therefore, we can say that the distance š¯‘‘ Charlotte [Scarlett] travels in her car while driving 58 miles per hour for 1.5 hours is 87 miles.