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  1. #16
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by Sazza View Post
    well the 22 would stand for the mean score, the 4 would be the amount of games played! the 4 + 1 would be the four games then the fifth game, but i'm kinda lost as to the second lot of workings, most likely because i haven't grasped the answer from the first lot probably!
    remember, the average score is (the total score)/(games played)

    the total score in the first four games was 88, since the average was 22 and they played 4 games, so it was an average of 22 points per game, which is where the 22 times 4 came from. but that isn't their total score anymore, they played a fifth game in which they scored x points. so we have to add that. now that they played 5 games, we divide by 5 to get the result. we are told ahead of time the result is 23, so we just equate the fraction to 23. now all that's left to do is solve for x

    how would i be able to calculate the fraction with out knowing what x equals?
    the objective is to find what x equals.

    are you asking me how to solve the equation?
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  2. #17
    Member Sazza's Avatar
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    Okay Iím trying to find 70, but I canít get it! Iím doing 400. ?/360= blah!
    But I canít really get it! Iíve tried 400. 39.60/360 but what would I do, the steps to get 70??
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  3. #18
    Member Sazza's Avatar
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    yes i'm just trying to figure it out!
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  4. #19
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by Sazza View Post
    Okay Iím trying to find 70, but I canít get it! Iím doing 400. ?/360= blah!
    But I canít really get it! Iíve tried 400. 39.60/360 but what would I do, the steps to get 70??
    i'm not sure what question this is in relation to. are you talking about the last pie chart problem? as in, you are trying to find what proportion of the circle corresponds to $70?

    70/600 x 360 = ?
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  5. #20
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by Sazza View Post
    yes i'm just trying to figure it out!
    remember, when we are solving an equation for a variable, our objective is simply to get that variable on one side of the equation by itself. to do this, we apply the opposite of the operations that are affecting the variable. so if we have something being added to the variable, we subtract that thing from both sides, if something is multiplying the variable, we divide both sides by that thing.

    \frac {88 + x}{5} = 23 .........................we have 5 dividing the expression that holds our variable, so we simply multiply both sides by 5

    \Rightarrow 88 + x = 23(5) = 115 ........now we have 88 being added to our variable, so let's subtract 88 from both sides

    \Rightarrow x = 115 - 88 ....................now, simplify

    \Rightarrow \boxed {x = 27}

    therefore, the team scored 27 points in their 5th game
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