Question

Tom has a bag of red,green and yellow sweets. He picks a sweet out of the bag without looking.
the probability of him picking a red sweet is 1/7 the probability of him picking a green sweet is twice the probability of him picking a yellow sweet
work out the probability of him picking a yellow sweet

Answer 1

probability of yellow =x
probability of green =2x
probability of red = 1/7
so
1=probability of yellow +probability of green + probability of red.

Answer 2

oh i see ok thanks :)

Answer 3

you're welcome :)

Answer 4

ok got a second part for you

Answer 5

tom know there are no more than 10 sweets in the bag? how many sweets are in the bag explain your answer?

Answer 6

very simple question ....answers
1/7, 2/7 , 4/7

Answer 7

great job! ;)
thanks

Answer 8

but how do you explain it?

Answer 9

1/7 + x + 2x = 1

Answer 10

oh i see thanks

Answer 11

does anyone else have a different method?