Students' numbers on star
(average of numbers on star = x-5)
For example, if it costs 15p to play the game, x =15. Average win should be x-5=10p. Therefore numbers add up to 10*6= 60
the diagram part of holly's design for a game. In her game a player pays x pence to spin a star. when the star stops spinning the payer wins the amount shown on the arrow. holly wants to gain an average of 5p each time the game is played show how this can be done by adding six more numbers to the star and finding a suitable value for x
4 answers
the answer above is wrong
there is part to the question that is missing ad it's a diagram of holly's spinner and since i cannot upload the picture the answer won't make much sense.
so the answer goes somewhere along the lines of:
(x-10)+(x-2)+((x-something)x6)/8
which gives:
(x-10)+(x-2)+((x-something)x6)= 40
8x-12-(the something called a)=40
8x-a=40
x-a/8= 5
and this is where it stops because i cannot solve an equation with two unknown values. so its all about finding that a and then finding x. i personally think that its to do with trial and error but i'm not too sure. i hope i helped and i'm sorry if you didn't understand this but this is all i can do considering that there is a missing part to this problem.
so the answer goes somewhere along the lines of:
(x-10)+(x-2)+((x-something)x6)/8
which gives:
(x-10)+(x-2)+((x-something)x6)= 40
8x-12-(the something called a)=40
8x-a=40
x-a/8= 5
and this is where it stops because i cannot solve an equation with two unknown values. so its all about finding that a and then finding x. i personally think that its to do with trial and error but i'm not too sure. i hope i helped and i'm sorry if you didn't understand this but this is all i can do considering that there is a missing part to this problem.
there are some spelling mistakes in the answer above! sorry! e.g:'ad' is actually 'and'
1 answer